Power off problem with newer kernels on Acer laptop

From: Bruce Mayo
Date: Sun Dec 13 2015 - 15:57:59 EST

Dear kernel maintainers,

Newer versions of the linux kernel don't shut off the power on an Acer
Aspire E11 laptop. The full bug report is attached.


Bruce Mayo
eMail: bruce.mayo@xxxxxxxx
Newer versions of the linux kernel don't shut off the power on an Acer Aspire E11 laptop.

I have a problem getting an Acer Aspire E11 (more specifically, Acer e3-112 C43A) to shut off. This laptop has 4GB RAM, Intel N2940, Intel chip set and Insyde Bios H20, V1.08 from 08/20/2014.

I seem to have localized the problem as a change in some recent kernels, perhaps in the implementation of reboot(). In Xubuntu I find that shutoff is carried out by /etc/rc0.d/S90halt, and this script executes normally up to a command realized as "halt -d -f -i -p -h". When power is turned off, the halt command normally prints a number in brackets to the console (so fast that I can't write it down). In versions of Xubuntu, the kernel shuts off the disk drive and halts without shutting off power, and this last line does not appear on the shut-down console. Other distributions have different behavior, as noted below.

To localize the problem, I tried starting various distributions of various ages from various primary devices (hard disk, usb, sd card reader). The type of primary device had no effect, but the age of the kernel does. The bug seems to appear around kernel version 3.16 and thereafter. Distributions with kernels 3.2 to 3.16 shut off normally, while other distributions with kernels 3.16 to 4.2 fail to turn off the power. It's not just in Debian/Ubuntu; the problem appears in Fedora as well.

With Xubuntu 14.04, after updating to kernel 3.13.0-24-generic, power turns off only if I eliminate "quiet splash" from GREMB_CDMLINE_LINUX_DEFAULT in /etc/default/grub.

A detailed protocol of my testing follows.


**** NO SHUT-OFF PROBLEM: **********************************************

Here are Linux distributions installed to the hard disk that shut down normally:

Xubuntu 12.04.4 installed on the internal SATA interface, to a SSD
Attached devices:
Host: scsi0 Channel: 00 Id: 00 Lun: 00
Vendor: ATA Model: KINGSTON SV300S3 Rev: 603A
Type: Direct-Access ANSI SCSI revision: 05

# uname -a
Linux E3-112 3.2.0-58-generic #88-Ubuntu SMP Tue Dec 3 17:40:43 UTC 2013 i686 i686 i386 GNU/Linux
Also (after updates)
# uname -a
Linux E3-112 3.2.0-95-generic-pae #135-Ubuntu SMP Tue Nov 10 14:02:19 UTC 2015 i686 i386 GNU/Linux

---------------------------------------------------------------

Kubuntu 14.04 installed on the internal SATA interface, Samsung mechanical HD

cat /proc/scsi/scsi
Attached devices:
Host: scsi0 Channel: 00 Id: 00 Lun: 00
Vendor: ATA Model: ST500LT012-1DG14 Rev: 0001
Type: Direct-Access ANSI SCSI revision: 05

# uname -a
Linux E3112 3.13.0-58-generic #97-Ubntu SMP Wed Jul 8 02:56:50 UTC 2015 i686 i686 i686 GNU/Linux

--------------------------------------------------------

Debian 8.2.0 (without updates) (scsi0, Samsung HD drive as above)
Linux DEBE3-112 3.16.0-4-686-pae #1 SMP Debian 3.16.7-ckt11+deb8u3 (2015-08-04) i686 GNU/Linux


_____________________________________________________________

Here are live Linuxes started from a usb memory stick / sd card that, on my Acer Aspire E11, shut down normally:

Xubuntu 12.04.4 live from usb (scsi2)
cat /proc/scsi/scsi
Attached devices:
Host: scsi2 Channel: 00 Id: 00 Lun: 00
Vendor: Verbatim Model: STORE N GO Rev: PMAP
Type: Direct-Access ANSI SCSI revision: 02

# uname -a
Linux xubuntu 3.2.0-58-generic #88-Ubuntu SMP Tue Dec 3 17:40:43 UTC 2013 i686 i686 i386 GNU/Linux

------------------------------------------------------------

Fedora 18 live from usb (scsi2)
# uname -a
Linux localhost 3.6.10-4.fc18.i686 #1 SMP Tue Dec 11 18:24:49 UTC 2012 i686 i686 i386 GNU/Linux

-------------------------------------------------------------

System Rescue CD live from SD card (scsi0: NOT the ST500 hard disk! Card reader appears on same bus.)
cat /proc/scsi/scsi
Attached devices:
Host: scsi0 Channel: 00 Id: 00 Lun: 00
Vendor: ATA Model: ST500LT012-1DG14 Rev: 0001
Type: Direct-Access ANSI SCSI revision: 05

# uname -a
Linux sysresccd 3.14.31-std451-amd64 #2 SMP Wed Feb 5 07:55:05 UTC 2015 x86_64 Intel(R) Celeron CPU N2940 @ 1.83 GH GenuineIntel GNU/Linux

-------------------------------------------------------------

Debian 8.2.0 live from usb (scsi2, as above)
# uname -a
Linux debian 3.16.0-4-686-pae #1 SMP Debian 3.16.7-ckt11-1+deb8u3 (2015-08-04) i686 GNU/Linux





**** WITH SHUT-OFF PROBLEM: ***********************************************
Here are distributions installed to the hard disk (scsi0) that halt but do not turn off the power:


Ubuntu 15.04 (no updates) from hard disk (scsi0)
# uname -a
Linux bruceu3-Aspire-E3-112 3.19.0-15-generic #15-Ubuntu SMP Thu Apr 16 23:32:01 UTC 2015 i686 i686 i686 GNU/Linux

--------------------------------------------------------

Fedora 4.3.3 Workstation from hard disk (scsi0)
# uname -a
Linux localhost.localdomain 4.2.3-300.fc23.i686 #1 SMP Mon Oct 5 16:26:47 UTC 2015 i686 i686 i686 GNU/Linux
Fedora , turn-off console:
[ 1.774353] Failed to find cpu0 device node


__________________________________________________________

Here are live Linuxes run from a usb memory stick / sd card that halt but do not turn off the power:


Debian 8.2 live from usb memory stick (scsi2, as above)
$ uname -a
Linux debian 3.16.0-4-586 #1 Debian 3.16.7-ckt11-1+deb8u3 (2015-08-04) i686 GNU/Linux

---------------------------------------------------------

Linux Mint 17.03 live from SD card (scsi0, as above)
cat /proc/scsi/scsi
# uname -a
Linux mint 3.19.0-32-generic #37~14.04.1-ubuntu SMP Thu Oct 22 09:37:25 UTC 2015 i686 i686 i686 GNU/Linux

--------------------------------------------------------

Linux Mint 17.03 live from a usb memory stick (scsi2, as above)
# uname -a
Linux mint 3.19.0-32-generic #37~14.04.1-Ubuntu SMP Thu Oct 22 09:37:25 UTC 2015 i686 i686 i686 GNU/Linux

---------------------------------------------------------


Xubuntu 15.10 live from usb memory stick (scsi2, as above)
# uname -a
Linux xubuntu 4.2.0-16-generic #19-Ubuntu SMP Thu Oct 8 14:46:51 UTC 2015 i686 i686 i686 GNU/Linux

---------------------------------------------------------

Fedora 23 Workstation live from usb memory stick (scsi2v, as above)
# uname -a
Linux localhost 4.2.3-300.fc23.i686 #1 SMP Mon Oct 5 16:26:47 UTC 2015 i686 i686 i386 GNU/Linux

Fedora 23, turn-off console:
[ 2.455819 Failed to find cpu0 device node
[ 2.752368 ehci-pci 0000:00:1d.0 port 1 reset error -110
[ 5.797329 sd 2:0:0:0 [sdb] No Caching mode page found
[ 5.797337 sd 2:0:0:0 [sdb] Assuming drive cache: write through


************************************************************

SYSTEM INFO FOR THE COMPUTER Acer Aspire E3 11


$ cat /proc/cpuinfo
processor : 0
vendor_id : GenuineIntel
cpu family : 6
model : 55
model name : Intel(R) Celeron(R) CPU N2940 @ 1.83GHz
stepping : 8
microcode : 0x829
cpu MHz : 498.000
cache size : 1024 KB
physical id : 0
siblings : 4
core id : 0
cpu cores : 4
apicid : 0
initial apicid : 0
fdiv_bug : no
hlt_bug : no
f00f_bug : no
coma_bug : no
fpu : yes
fpu_exception : yes
cpuid level : 11
wp : yes
flags : fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov pat pse36 clflush dts acpi mmx fxsr sse sse2 ss ht tm pbe nx rdtscp lm constant_tsc arch_perfmon pebs bts xtopology nonstop_tsc aperfmperf pni pclmulqdq dtes64 monitor ds_cpl vmx est tm2 ssse3 cx16 xtpr pdcm sse4_1 sse4_2 movbe popcnt tsc_deadline_timer rdrand lahf_lm 3dnowprefetch ida arat epb dtherm tpr_shadow vnmi flexpriority ept vpid smep erms
bogomips : 3666.66
clflush size : 64
cache_alignment : 64
address sizes : 36 bits physical, 48 bits virtual
power management:

processor : 1
vendor_id : GenuineIntel
cpu family : 6
model : 55
model name : Intel(R) Celeron(R) CPU N2940 @ 1.83GHz
stepping : 8
microcode : 0x829
cpu MHz : 498.000
cache size : 1024 KB
physical id : 0
siblings : 4
core id : 1
cpu cores : 4
apicid : 2
initial apicid : 2
fdiv_bug : no
hlt_bug : no
f00f_bug : no
coma_bug : no
fpu : yes
fpu_exception : yes
cpuid level : 11
wp : yes
flags : fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov pat pse36 clflush dts acpi mmx fxsr sse sse2 ss ht tm pbe nx rdtscp lm constant_tsc arch_perfmon pebs bts xtopology nonstop_tsc aperfmperf pni pclmulqdq dtes64 monitor ds_cpl vmx est tm2 ssse3 cx16 xtpr pdcm sse4_1 sse4_2 movbe popcnt tsc_deadline_timer rdrand lahf_lm 3dnowprefetch ida arat epb dtherm tpr_shadow vnmi flexpriority ept vpid smep erms
bogomips : 3666.65
clflush size : 64
cache_alignment : 64
address sizes : 36 bits physical, 48 bits virtual
power management:

processor : 2
vendor_id : GenuineIntel
cpu family : 6
model : 55
model name : Intel(R) Celeron(R) CPU N2940 @ 1.83GHz
stepping : 8
microcode : 0x829
cpu MHz : 498.000
cache size : 1024 KB
physical id : 0
siblings : 4
core id : 2
cpu cores : 4
apicid : 4
initial apicid : 4
fdiv_bug : no
hlt_bug : no
f00f_bug : no
coma_bug : no
fpu : yes
fpu_exception : yes
cpuid level : 11
wp : yes
flags : fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov pat pse36 clflush dts acpi mmx fxsr sse sse2 ss ht tm pbe nx rdtscp lm constant_tsc arch_perfmon pebs bts xtopology nonstop_tsc aperfmperf pni pclmulqdq dtes64 monitor ds_cpl vmx est tm2 ssse3 cx16 xtpr pdcm sse4_1 sse4_2 movbe popcnt tsc_deadline_timer rdrand lahf_lm 3dnowprefetch ida arat epb dtherm tpr_shadow vnmi flexpriority ept vpid smep erms
bogomips : 3666.67
clflush size : 64
cache_alignment : 64
address sizes : 36 bits physical, 48 bits virtual
power management:

processor : 3
vendor_id : GenuineIntel
cpu family : 6
model : 55
model name : Intel(R) Celeron(R) CPU N2940 @ 1.83GHz
stepping : 8
microcode : 0x829
cpu MHz : 498.000
cache size : 1024 KB
physical id : 0
siblings : 4
core id : 3
cpu cores : 4
apicid : 6
initial apicid : 6
fdiv_bug : no
hlt_bug : no
f00f_bug : no
coma_bug : no
fpu : yes
fpu_exception : yes
cpuid level : 11
wp : yes
flags : fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov pat pse36 clflush dts acpi mmx fxsr sse sse2 ss ht tm pbe nx rdtscp lm constant_tsc arch_perfmon pebs bts xtopology nonstop_tsc aperfmperf pni pclmulqdq dtes64 monitor ds_cpl vmx est tm2 ssse3 cx16 xtpr pdcm sse4_1 sse4_2 movbe popcnt tsc_deadline_timer rdrand lahf_lm 3dnowprefetch ida arat epb dtherm tpr_shadow vnmi flexpriority ept vpid smep erms
bogomips : 3666.68
clflush size : 64
cache_alignment : 64
address sizes : 36 bits physical, 48 bits virtual
power management:



bruce3@E3-112:~$ cat /proc/modules
usbhid 41937 0 - Live 0x00000000
hid 81731 1 usbhid, Live 0x00000000
nls_iso8859_1 12617 1 - Live 0x00000000
nls_cp437 12751 1 - Live 0x00000000
vfat 17308 1 - Live 0x00000000
fat 55605 1 vfat, Live 0x00000000
mmc_block 26776 2 - Live 0x00000000
joydev 17393 0 - Live 0x00000000
ath3k 12825 0 - Live 0x00000000
btusb 17948 2 - Live 0x00000000
acer_wmi 23612 0 - Live 0x00000000
sparse_keymap 13658 1 acer_wmi, Live 0x00000000
snd_hda_codec_realtek 174385 1 - Live 0x00000000
uvcvideo 67203 0 - Live 0x00000000
videodev 86588 1 uvcvideo, Live 0x00000000
snd_hda_intel 32719 4 - Live 0x00000000
snd_hda_codec 109562 2 snd_hda_codec_realtek,snd_hda_intel, Live 0x00000000
snd_hwdep 13276 1 snd_hda_codec, Live 0x00000000
snd_pcm 80916 2 snd_hda_intel,snd_hda_codec, Live 0x00000000
bnep 17830 2 - Live 0x00000000
rfcomm 38139 16 - Live 0x00000000
bluetooth 158447 24 ath3k,btusb,bnep,rfcomm, Live 0x00000000
parport_pc 32114 0 - Live 0x00000000
ppdev 12849 0 - Live 0x00000000
snd_seq_midi 13132 0 - Live 0x00000000
snd_rawmidi 25424 1 snd_seq_midi, Live 0x00000000
snd_seq_midi_event 14475 1 snd_seq_midi, Live 0x00000000
psmouse 87142 0 - Live 0x00000000
serio_raw 13027 0 - Live 0x00000000
snd_seq 51592 2 snd_seq_midi,snd_seq_midi_event, Live 0x00000000
snd_timer 28931 2 snd_pcm,snd_seq, Live 0x00000000
snd_seq_device 14172 3 snd_seq_midi,snd_rawmidi,snd_seq, Live 0x00000000
snd 62250 17 snd_hda_codec_realtek,snd_hda_intel,snd_hda_codec,snd_hwdep,snd_pcm,snd_rawmidi,snd_seq,snd_timer,snd_seq_device, Live 0x00000000
video 19115 0 - Live 0x00000000
soundcore 14635 1 snd, Live 0x00000000
snd_page_alloc 14108 2 snd_hda_intel,snd_pcm, Live 0x00000000
wmi 18744 1 acer_wmi, Live 0x00000000
mac_hid 13077 0 - Live 0x00000000
lp 17455 0 - Live 0x00000000
parport 40930 3 parport_pc,ppdev,lp, Live 0x00000000
r8169 56396 0 - Live 0x00000000
sdhci_pci 18324 0 - Live 0x00000000
sdhci 28241 1 sdhci_pci, Live 0x00000000


sudo lspci -vvv
00:00.0 Host bridge: Intel Corporation ValleyView SSA-CUnit (rev 0e)
Subsystem: Acer Incorporated [ALI] Device 0933
Control: I/O+ Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr- Stepping- SERR- FastB2B- DisINTx-
Status: Cap- 66MHz- UDF- FastB2B- ParErr- DEVSEL=fast >TAbort- <TAbort- <MAbort- >SERR- <PERR- INTx-
Latency: 0

00:02.0 VGA compatible controller: Intel Corporation ValleyView Gen7 (rev 0e) (prog-if 00 [VGA controller])
Subsystem: Acer Incorporated [ALI] Device 0933
Control: I/O+ Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr- Stepping- SERR- FastB2B- DisINTx-
Status: Cap+ 66MHz- UDF- FastB2B- ParErr- DEVSEL=fast >TAbort- <TAbort- <MAbort- >SERR- <PERR- INTx-
Latency: 0
Interrupt: pin A routed to IRQ 7
Region 0: Memory at 90000000 (32-bit, non-prefetchable) [size=4M]
Region 2: Memory at 80000000 (32-bit, prefetchable) [size=256M]
Region 4: I/O ports at 2050 [size=8]
Expansion ROM at <unassigned> [disabled]
Capabilities: [d0] Power Management version 2
Flags: PMEClk- DSI+ D1- D2- AuxCurrent=0mA PME(D0-,D1-,D2-,D3hot-,D3cold-)
Status: D0 NoSoftRst- PME-Enable- DSel=0 DScale=0 PME-
Capabilities: [90] MSI: Enable- Count=1/1 Maskable- 64bit-
Address: 00000000 Data: 0000
Capabilities: [b0] Vendor Specific Information: Len=07 <?>

00:12.0 SD Host controller: Intel Corporation ValleyView SDIO Controller (rev 0e) (prog-if 01)
Subsystem: Acer Incorporated [ALI] Device 0933
Control: I/O- Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr- Stepping- SERR- FastB2B- DisINTx-
Status: Cap+ 66MHz- UDF- FastB2B- ParErr- DEVSEL=fast >TAbort- <TAbort- <MAbort- >SERR- <PERR- INTx-
Latency: 0, Cache Line Size: 64 bytes
Interrupt: pin A routed to IRQ 18
Region 0: Memory at 90921000 (32-bit, non-prefetchable) [size=4K]
Region 1: Memory at 90920000 (32-bit, non-prefetchable) [size=4K]
Capabilities: [80] Power Management version 3
Flags: PMEClk- DSI- D1- D2- AuxCurrent=0mA PME(D0+,D1-,D2-,D3hot+,D3cold-)
Status: D0 NoSoftRst+ PME-Enable- DSel=0 DScale=0 PME-
Kernel driver in use: sdhci-pci
Kernel modules: sdhci-pci

00:13.0 SATA controller: Intel Corporation ValleyView 6-Port SATA AHCI Controller (rev 0e) (prog-if 01 [AHCI 1.0])
Subsystem: Acer Incorporated [ALI] Device 0933
Control: I/O+ Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr- Stepping- SERR- FastB2B- DisINTx+
Status: Cap+ 66MHz+ UDF- FastB2B+ ParErr- DEVSEL=medium >TAbort- <TAbort- <MAbort- >SERR- <PERR- INTx-
Latency: 0
Interrupt: pin A routed to IRQ 103
Region 0: I/O ports at 2048 [size=8]
Region 1: I/O ports at 205c [size=4]
Region 2: I/O ports at 2040 [size=8]
Region 3: I/O ports at 2058 [size=4]
Region 4: I/O ports at 2020 [size=32]
Region 5: Memory at 9091f000 (32-bit, non-prefetchable) [size=2K]
Capabilities: [80] MSI: Enable+ Count=1/1 Maskable- 64bit-
Address: fee0300c Data: 4169
Capabilities: [70] Power Management version 3
Flags: PMEClk- DSI- D1- D2- AuxCurrent=0mA PME(D0-,D1-,D2-,D3hot+,D3cold-)
Status: D0 NoSoftRst+ PME-Enable- DSel=0 DScale=0 PME-
Capabilities: [a8] SATA HBA v1.0 BAR4 Offset=00000004
Kernel driver in use: ahci

00:14.0 USB controller: Intel Corporation ValleyView USB xHCI Host Controller (rev 0e) (prog-if 30 [XHCI])
Subsystem: Acer Incorporated [ALI] Device 0933
Control: I/O- Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr- Stepping- SERR- FastB2B- DisINTx+
Status: Cap+ 66MHz- UDF- FastB2B+ ParErr- DEVSEL=medium >TAbort- <TAbort- <MAbort- >SERR- <PERR- INTx-
Latency: 0
Interrupt: pin A routed to IRQ 104
Region 0: Memory at 90900000 (64-bit, non-prefetchable) [size=64K]
Capabilities: [70] Power Management version 2
Flags: PMEClk- DSI- D1- D2- AuxCurrent=375mA PME(D0-,D1-,D2-,D3hot+,D3cold+)
Status: D0 NoSoftRst+ PME-Enable- DSel=0 DScale=0 PME-
Capabilities: [80] MSI: Enable+ Count=1/8 Maskable- 64bit+
Address: 00000000fee0f00c Data: 4171
Kernel driver in use: xhci_hcd

00:17.0 SD Host controller: Intel Corporation ValleyView MIPI-HSI Controller (rev 0e) (prog-if 01)
Subsystem: Acer Incorporated [ALI] Device 0933
Control: I/O- Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr- Stepping- SERR- FastB2B- DisINTx-
Status: Cap+ 66MHz- UDF- FastB2B- ParErr- DEVSEL=fast >TAbort- <TAbort- <MAbort- >SERR- <PERR- INTx-
Latency: 0, Cache Line Size: 64 bytes
Interrupt: pin A routed to IRQ 23
Region 0: Memory at 9091e000 (32-bit, non-prefetchable) [size=4K]
Region 1: Memory at 9091d000 (32-bit, non-prefetchable) [size=4K]
Capabilities: [80] Power Management version 3
Flags: PMEClk- DSI- D1- D2- AuxCurrent=0mA PME(D0+,D1-,D2-,D3hot+,D3cold-)
Status: D0 NoSoftRst+ PME-Enable- DSel=0 DScale=0 PME-
Kernel driver in use: sdhci-pci
Kernel modules: sdhci-pci

00:1a.0 Encryption controller: Intel Corporation ValleyView SEC (rev 0e)
Subsystem: Acer Incorporated [ALI] Device 0933
Control: I/O- Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr- Stepping- SERR+ FastB2B- DisINTx-
Status: Cap+ 66MHz- UDF- FastB2B- ParErr- DEVSEL=fast >TAbort- <TAbort- <MAbort- >SERR- <PERR- INTx-
Latency: 0, Cache Line Size: 64 bytes
Interrupt: pin A routed to IRQ 10
Region 0: Memory at 90800000 (32-bit, non-prefetchable) [size=1M]
Region 1: Memory at 90700000 (32-bit, non-prefetchable) [size=1M]
Capabilities: [80] Power Management version 3
Flags: PMEClk- DSI- D1- D2- AuxCurrent=0mA PME(D0+,D1-,D2-,D3hot+,D3cold-)
Status: D0 NoSoftRst+ PME-Enable- DSel=0 DScale=0 PME-
Capabilities: [a0] MSI: Enable- Count=1/1 Maskable- 64bit-
Address: 00000000 Data: 0000

00:1b.0 Audio device: Intel Corporation ValleyView High Definition Audio Controller (rev 0e)
Subsystem: Acer Incorporated [ALI] Device 0933
Control: I/O- Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr- Stepping- SERR- FastB2B- DisINTx+
Status: Cap+ 66MHz- UDF- FastB2B- ParErr- DEVSEL=fast >TAbort- <TAbort- <MAbort- >SERR- <PERR- INTx-
Latency: 0, Cache Line Size: 64 bytes
Interrupt: pin A routed to IRQ 106
Region 0: Memory at 90910000 (64-bit, non-prefetchable) [size=16K]
Capabilities: [50] Power Management version 2
Flags: PMEClk- DSI- D1- D2- AuxCurrent=55mA PME(D0+,D1-,D2-,D3hot+,D3cold+)
Status: D0 NoSoftRst- PME-Enable- DSel=0 DScale=0 PME-
Capabilities: [60] MSI: Enable+ Count=1/1 Maskable- 64bit+
Address: 00000000fee0c00c Data: 4189
Kernel driver in use: snd_hda_intel
Kernel modules: snd-hda-intel

00:1c.0 PCI bridge: Intel Corporation ValleyView PCI Express Root Port (rev 0e) (prog-if 00 [Normal decode])
Control: I/O+ Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr- Stepping- SERR- FastB2B- DisINTx-
Status: Cap+ 66MHz- UDF- FastB2B- ParErr- DEVSEL=fast >TAbort- <TAbort- <MAbort- >SERR- <PERR- INTx-
Latency: 0, Cache Line Size: 64 bytes
Bus: primary=00, secondary=01, subordinate=01, sec-latency=0
I/O behind bridge: 00004000-00004fff
Memory behind bridge: fff00000-000fffff
Prefetchable memory behind bridge: 00000000fff00000-00000000000fffff
Secondary status: 66MHz- FastB2B- ParErr- DEVSEL=fast >TAbort- <TAbort- <MAbort- <SERR- <PERR-
BridgeCtl: Parity- SERR- NoISA- VGA- MAbort- >Reset- FastB2B-
PriDiscTmr- SecDiscTmr- DiscTmrStat- DiscTmrSERREn-
Capabilities: [40] Express (v2) Root Port (Slot+), MSI 00
DevCap: MaxPayload 128 bytes, PhantFunc 0, Latency L0s <64ns, L1 <1us
ExtTag- RBE+ FLReset-
DevCtl: Report errors: Correctable- Non-Fatal- Fatal- Unsupported-
RlxdOrd- ExtTag- PhantFunc- AuxPwr- NoSnoop-
MaxPayload 128 bytes, MaxReadReq 128 bytes
DevSta: CorrErr- UncorrErr- FatalErr- UnsuppReq- AuxPwr+ TransPend-
LnkCap: Port #1, Speed 5GT/s, Width x1, ASPM L0s L1, Latency L0 <512ns, L1 <4us
ClockPM- Surprise- LLActRep+ BwNot+
LnkCtl: ASPM L1 Enabled; RCB 64 bytes Disabled- Retrain- CommClk+
ExtSynch- ClockPM- AutWidDis- BWInt- AutBWInt-
LnkSta: Speed 2.5GT/s, Width x0, TrErr- Train- SlotClk+ DLActive- BWMgmt- ABWMgmt-
SltCap: AttnBtn- PwrCtrl- MRL- AttnInd- PwrInd- HotPlug+ Surprise+
Slot #0, PowerLimit 10.000W; Interlock- NoCompl+
SltCtl: Enable: AttnBtn- PwrFlt- MRL- PresDet+ CmdCplt- HPIrq- LinkChg-
Control: AttnInd Unknown, PwrInd Unknown, Power- Interlock-
SltSta: Status: AttnBtn- PowerFlt- MRL- CmdCplt- PresDet- Interlock-
Changed: MRL- PresDet- LinkState-
RootCtl: ErrCorrectable- ErrNon-Fatal- ErrFatal- PMEIntEna- CRSVisible-
RootCap: CRSVisible-
RootSta: PME ReqID 0000, PMEStatus- PMEPending-
DevCap2: Completion Timeout: Range BC, TimeoutDis+ ARIFwd-
DevCtl2: Completion Timeout: 50us to 50ms, TimeoutDis- ARIFwd-
LnkCtl2: Target Link Speed: 5GT/s, EnterCompliance- SpeedDis-, Selectable De-emphasis: -6dB
Transmit Margin: Normal Operating Range, EnterModifiedCompliance- ComplianceSOS-
Compliance De-emphasis: -6dB
LnkSta2: Current De-emphasis Level: -3.5dB
Capabilities: [80] MSI: Enable- Count=1/1 Maskable- 64bit-
Address: 00000000 Data: 0000
Capabilities: [90] Subsystem: Acer Incorporated [ALI] Device 0933
Capabilities: [a0] Power Management version 3
Flags: PMEClk- DSI- D1- D2- AuxCurrent=0mA PME(D0+,D1-,D2-,D3hot+,D3cold+)
Status: D0 NoSoftRst- PME-Enable- DSel=0 DScale=0 PME-
Kernel driver in use: pcieport
Kernel modules: shpchp

00:1c.1 PCI bridge: Intel Corporation ValleyView PCI Express Root Port (rev 0e) (prog-if 00 [Normal decode])
Control: I/O+ Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr- Stepping- SERR- FastB2B- DisINTx-
Status: Cap+ 66MHz- UDF- FastB2B- ParErr- DEVSEL=fast >TAbort- <TAbort- <MAbort- >SERR- <PERR- INTx-
Latency: 0, Cache Line Size: 64 bytes
Bus: primary=00, secondary=02, subordinate=02, sec-latency=0
I/O behind bridge: 00003000-00003fff
Memory behind bridge: 90600000-906fffff
Prefetchable memory behind bridge: 00000000fff00000-00000000000fffff
Secondary status: 66MHz- FastB2B- ParErr- DEVSEL=fast >TAbort- <TAbort- <MAbort- <SERR- <PERR-
BridgeCtl: Parity- SERR- NoISA- VGA- MAbort- >Reset- FastB2B-
PriDiscTmr- SecDiscTmr- DiscTmrStat- DiscTmrSERREn-
Capabilities: [40] Express (v2) Root Port (Slot+), MSI 00
DevCap: MaxPayload 128 bytes, PhantFunc 0, Latency L0s <64ns, L1 <1us
ExtTag- RBE+ FLReset-
DevCtl: Report errors: Correctable- Non-Fatal- Fatal- Unsupported-
RlxdOrd- ExtTag- PhantFunc- AuxPwr- NoSnoop-
MaxPayload 128 bytes, MaxReadReq 128 bytes
DevSta: CorrErr- UncorrErr- FatalErr- UnsuppReq- AuxPwr+ TransPend-
LnkCap: Port #2, Speed 5GT/s, Width x1, ASPM L0s L1, Latency L0 <512ns, L1 <4us
ClockPM- Surprise- LLActRep+ BwNot+
LnkCtl: ASPM L1 Enabled; RCB 64 bytes Disabled- Retrain- CommClk+
ExtSynch- ClockPM- AutWidDis- BWInt- AutBWInt-
LnkSta: Speed 2.5GT/s, Width x1, TrErr- Train- SlotClk+ DLActive+ BWMgmt+ ABWMgmt-
SltCap: AttnBtn- PwrCtrl- MRL- AttnInd- PwrInd- HotPlug+ Surprise+
Slot #1, PowerLimit 10.000W; Interlock- NoCompl+
SltCtl: Enable: AttnBtn- PwrFlt- MRL- PresDet+ CmdCplt- HPIrq- LinkChg-
Control: AttnInd Unknown, PwrInd Unknown, Power- Interlock-
SltSta: Status: AttnBtn- PowerFlt- MRL- CmdCplt- PresDet+ Interlock-
Changed: MRL- PresDet- LinkState-
RootCtl: ErrCorrectable- ErrNon-Fatal- ErrFatal- PMEIntEna- CRSVisible-
RootCap: CRSVisible-
RootSta: PME ReqID 0000, PMEStatus- PMEPending-
DevCap2: Completion Timeout: Range BC, TimeoutDis+ ARIFwd-
DevCtl2: Completion Timeout: 50us to 50ms, TimeoutDis- ARIFwd-
LnkCtl2: Target Link Speed: 5GT/s, EnterCompliance- SpeedDis-, Selectable De-emphasis: -6dB
Transmit Margin: Normal Operating Range, EnterModifiedCompliance- ComplianceSOS-
Compliance De-emphasis: -6dB
LnkSta2: Current De-emphasis Level: -3.5dB
Capabilities: [80] MSI: Enable- Count=1/1 Maskable- 64bit-
Address: 00000000 Data: 0000
Capabilities: [90] Subsystem: Acer Incorporated [ALI] Device 0933
Capabilities: [a0] Power Management version 3
Flags: PMEClk- DSI- D1- D2- AuxCurrent=0mA PME(D0+,D1-,D2-,D3hot+,D3cold+)
Status: D0 NoSoftRst- PME-Enable- DSel=0 DScale=0 PME-
Kernel driver in use: pcieport
Kernel modules: shpchp

00:1c.2 PCI bridge: Intel Corporation ValleyView PCI Express Root Port (rev 0e) (prog-if 00 [Normal decode])
Control: I/O+ Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr- Stepping- SERR- FastB2B- DisINTx-
Status: Cap+ 66MHz- UDF- FastB2B- ParErr- DEVSEL=fast >TAbort- <TAbort- <MAbort- >SERR- <PERR- INTx-
Latency: 0, Cache Line Size: 64 bytes
Bus: primary=00, secondary=03, subordinate=03, sec-latency=0
I/O behind bridge: 00001000-00001fff
Memory behind bridge: 90500000-905fffff
Prefetchable memory behind bridge: 0000000090400000-00000000904fffff
Secondary status: 66MHz- FastB2B- ParErr- DEVSEL=fast >TAbort- <TAbort- <MAbort- <SERR- <PERR-
BridgeCtl: Parity- SERR- NoISA- VGA- MAbort- >Reset- FastB2B-
PriDiscTmr- SecDiscTmr- DiscTmrStat- DiscTmrSERREn-
Capabilities: [40] Express (v2) Root Port (Slot+), MSI 00
DevCap: MaxPayload 128 bytes, PhantFunc 0, Latency L0s <64ns, L1 <1us
ExtTag- RBE+ FLReset-
DevCtl: Report errors: Correctable- Non-Fatal- Fatal- Unsupported-
RlxdOrd- ExtTag- PhantFunc- AuxPwr- NoSnoop-
MaxPayload 128 bytes, MaxReadReq 128 bytes
DevSta: CorrErr- UncorrErr+ FatalErr- UnsuppReq+ AuxPwr+ TransPend-
LnkCap: Port #3, Speed 5GT/s, Width x1, ASPM L0s L1, Latency L0 <512ns, L1 <4us
ClockPM- Surprise- LLActRep+ BwNot+
LnkCtl: ASPM L1 Enabled; RCB 64 bytes Disabled- Retrain- CommClk+
ExtSynch- ClockPM- AutWidDis- BWInt- AutBWInt-
LnkSta: Speed 2.5GT/s, Width x1, TrErr- Train- SlotClk+ DLActive+ BWMgmt+ ABWMgmt-
SltCap: AttnBtn- PwrCtrl- MRL- AttnInd- PwrInd- HotPlug+ Surprise+
Slot #2, PowerLimit 10.000W; Interlock- NoCompl+
SltCtl: Enable: AttnBtn- PwrFlt- MRL- PresDet+ CmdCplt- HPIrq- LinkChg-
Control: AttnInd Unknown, PwrInd Unknown, Power- Interlock-
SltSta: Status: AttnBtn- PowerFlt- MRL- CmdCplt- PresDet+ Interlock-
Changed: MRL- PresDet- LinkState-
RootCtl: ErrCorrectable- ErrNon-Fatal- ErrFatal- PMEIntEna- CRSVisible-
RootCap: CRSVisible-
RootSta: PME ReqID 0000, PMEStatus- PMEPending-
DevCap2: Completion Timeout: Range BC, TimeoutDis+ ARIFwd-
DevCtl2: Completion Timeout: 50us to 50ms, TimeoutDis- ARIFwd-
LnkCtl2: Target Link Speed: 5GT/s, EnterCompliance- SpeedDis-, Selectable De-emphasis: -6dB
Transmit Margin: Normal Operating Range, EnterModifiedCompliance- ComplianceSOS-
Compliance De-emphasis: -6dB
LnkSta2: Current De-emphasis Level: -3.5dB
Capabilities: [80] MSI: Enable- Count=1/1 Maskable- 64bit-
Address: 00000000 Data: 0000
Capabilities: [90] Subsystem: Acer Incorporated [ALI] Device 0933
Capabilities: [a0] Power Management version 3
Flags: PMEClk- DSI- D1- D2- AuxCurrent=0mA PME(D0+,D1-,D2-,D3hot+,D3cold+)
Status: D0 NoSoftRst- PME-Enable- DSel=0 DScale=0 PME-
Kernel driver in use: pcieport
Kernel modules: shpchp

00:1d.0 USB controller: Intel Corporation ValleyView USB Enhanced Host Controller (rev 0e) (prog-if 20 [EHCI])
Subsystem: Acer Incorporated [ALI] Device 0933
Control: I/O- Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr- Stepping- SERR- FastB2B- DisINTx-
Status: Cap+ 66MHz- UDF- FastB2B+ ParErr- DEVSEL=medium >TAbort- <TAbort- <MAbort- >SERR- <PERR- INTx-
Latency: 0
Interrupt: pin A routed to IRQ 23
Region 0: Memory at 90918000 (32-bit, non-prefetchable) [size=1K]
Capabilities: [50] Power Management version 3
Flags: PMEClk- DSI- D1- D2- AuxCurrent=375mA PME(D0+,D1-,D2-,D3hot+,D3cold+)
Status: D0 NoSoftRst+ PME-Enable- DSel=0 DScale=0 PME-
Capabilities: [58] Debug port: BAR=1 offset=00a0
Capabilities: [98] PCI Advanced Features
AFCap: TP+ FLR+
AFCtrl: FLR-
AFStatus: TP+
Kernel driver in use: ehci_hcd

00:1f.0 ISA bridge: Intel Corporation ValleyView Power Control Unit (rev 0e)
Subsystem: Acer Incorporated [ALI] Device 0933
Control: I/O+ Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr- Stepping- SERR+ FastB2B- DisINTx-
Status: Cap+ 66MHz- UDF- FastB2B- ParErr- DEVSEL=medium >TAbort- <TAbort- <MAbort- >SERR- <PERR- INTx-
Latency: 0
Capabilities: [e0] Vendor Specific Information: Len=0c <?>

00:1f.3 SMBus: Intel Corporation ValleyView SMBus Controller (rev 0e)
Subsystem: Acer Incorporated [ALI] Device 0933
Control: I/O+ Mem+ BusMaster- SpecCycle- MemWINV- VGASnoop- ParErr- Stepping- SERR- FastB2B- DisINTx-
Status: Cap+ 66MHz- UDF- FastB2B+ ParErr- DEVSEL=medium >TAbort- <TAbort- <MAbort- >SERR- <PERR- INTx-
Interrupt: pin B routed to IRQ 11
Region 0: Memory at 90919000 (32-bit, non-prefetchable) [size=32]
Region 4: I/O ports at 2000 [size=32]
Capabilities: [50] Power Management version 3
Flags: PMEClk- DSI- D1- D2- AuxCurrent=0mA PME(D0-,D1-,D2-,D3hot-,D3cold-)
Status: D0 NoSoftRst+ PME-Enable- DSel=0 DScale=0 PME-

02:00.0 Network controller: Qualcomm Atheros QCA9565 / AR9565 Wireless Network Adapter (rev 01)
Subsystem: Lite-On Communications Inc Device 0642
Control: I/O- Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr- Stepping- SERR- FastB2B- DisINTx-
Status: Cap+ 66MHz- UDF- FastB2B- ParErr- DEVSEL=fast >TAbort- <TAbort- <MAbort- >SERR- <PERR- INTx-
Latency: 0, Cache Line Size: 64 bytes
Interrupt: pin A routed to IRQ 10
Region 0: Memory at 90600000 (64-bit, non-prefetchable) [size=512K]
Expansion ROM at 90680000 [disabled] [size=64K]
Capabilities: [40] Power Management version 2
Flags: PMEClk- DSI- D1+ D2+ AuxCurrent=375mA PME(D0+,D1+,D2+,D3hot+,D3cold+)
Status: D0 NoSoftRst- PME-Enable- DSel=0 DScale=0 PME-
Capabilities: [50] MSI: Enable- Count=1/4 Maskable+ 64bit+
Address: 0000000000000000 Data: 0000
Masking: 00000000 Pending: 00000000
Capabilities: [70] Express (v2) Endpoint, MSI 00
DevCap: MaxPayload 128 bytes, PhantFunc 0, Latency L0s unlimited, L1 <64us
ExtTag- AttnBtn- AttnInd- PwrInd- RBE+ FLReset-
DevCtl: Report errors: Correctable- Non-Fatal- Fatal- Unsupported-
RlxdOrd+ ExtTag- PhantFunc- AuxPwr- NoSnoop-
MaxPayload 128 bytes, MaxReadReq 512 bytes
DevSta: CorrErr- UncorrErr- FatalErr- UnsuppReq- AuxPwr+ TransPend-
LnkCap: Port #0, Speed 2.5GT/s, Width x1, ASPM L0s L1, Latency L0 <4us, L1 <64us
ClockPM- Surprise- LLActRep- BwNot-
LnkCtl: ASPM L1 Enabled; RCB 64 bytes Disabled- Retrain- CommClk+
ExtSynch- ClockPM- AutWidDis- BWInt- AutBWInt-
LnkSta: Speed 2.5GT/s, Width x1, TrErr- Train- SlotClk+ DLActive- BWMgmt- ABWMgmt-
DevCap2: Completion Timeout: Not Supported, TimeoutDis+
DevCtl2: Completion Timeout: 50us to 50ms, TimeoutDis-
LnkCtl2: Target Link Speed: 2.5GT/s, EnterCompliance- SpeedDis-, Selectable De-emphasis: -6dB
Transmit Margin: Normal Operating Range, EnterModifiedCompliance- ComplianceSOS-
Compliance De-emphasis: -6dB
LnkSta2: Current De-emphasis Level: -6dB
Capabilities: [100 v1] Advanced Error Reporting
UESta: DLP- SDES- TLP- FCP- CmpltTO- CmpltAbrt- UnxCmplt- RxOF- MalfTLP- ECRC- UnsupReq- ACSViol-
UEMsk: DLP- SDES- TLP- FCP- CmpltTO- CmpltAbrt- UnxCmplt- RxOF- MalfTLP- ECRC- UnsupReq- ACSViol-
UESvrt: DLP+ SDES+ TLP- FCP+ CmpltTO- CmpltAbrt- UnxCmplt- RxOF+ MalfTLP+ ECRC- UnsupReq- ACSViol-
CESta: RxErr- BadTLP- BadDLLP- Rollover- Timeout- NonFatalErr-
CEMsk: RxErr- BadTLP- BadDLLP- Rollover- Timeout- NonFatalErr+
AERCap: First Error Pointer: 00, GenCap- CGenEn- ChkCap- ChkEn-
Capabilities: [140 v1] Virtual Channel
Caps: LPEVC=0 RefClk=100ns PATEntryBits=1
Arb: Fixed- WRR32- WRR64- WRR128-
Ctrl: ArbSelect=Fixed
Status: InProgress-
VC0: Caps: PATOffset=00 MaxTimeSlots=1 RejSnoopTrans-
Arb: Fixed- WRR32- WRR64- WRR128- TWRR128- WRR256-
Ctrl: Enable+ ID=0 ArbSelect=Fixed TC/VC=ff
Status: NegoPending- InProgress-
Capabilities: [160 v1] Device Serial Number 00-00-00-00-00-00-00-00

03:00.0 Ethernet controller: Realtek Semiconductor Co., Ltd. RTL8111/8168/8411 PCI Express Gigabit Ethernet Controller (rev 0c)
Subsystem: Acer Incorporated [ALI] Device 0933
Control: I/O+ Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr- Stepping- SERR- FastB2B- DisINTx+
Status: Cap+ 66MHz- UDF- FastB2B- ParErr- DEVSEL=fast >TAbort- <TAbort- <MAbort- >SERR- <PERR- INTx-
Latency: 0, Cache Line Size: 64 bytes
Interrupt: pin A routed to IRQ 105
Region 0: I/O ports at 1000 [size=256]
Region 2: Memory at 90500000 (64-bit, non-prefetchable) [size=4K]
Region 4: Memory at 90400000 (64-bit, prefetchable) [size=16K]
Capabilities: [40] Power Management version 3
Flags: PMEClk- DSI- D1+ D2+ AuxCurrent=375mA PME(D0+,D1+,D2+,D3hot+,D3cold+)
Status: D0 NoSoftRst+ PME-Enable- DSel=0 DScale=0 PME-
Capabilities: [50] MSI: Enable+ Count=1/1 Maskable- 64bit+
Address: 00000000fee0100c Data: 4179
Capabilities: [70] Express (v2) Endpoint, MSI 01
DevCap: MaxPayload 128 bytes, PhantFunc 0, Latency L0s <512ns, L1 <64us
ExtTag- AttnBtn- AttnInd- PwrInd- RBE+ FLReset-
DevCtl: Report errors: Correctable- Non-Fatal- Fatal- Unsupported-
RlxdOrd+ ExtTag- PhantFunc- AuxPwr- NoSnoop-
MaxPayload 128 bytes, MaxReadReq 4096 bytes
DevSta: CorrErr- UncorrErr- FatalErr- UnsuppReq- AuxPwr+ TransPend-
LnkCap: Port #0, Speed 2.5GT/s, Width x1, ASPM L0s L1, Latency L0 unlimited, L1 <64us
ClockPM+ Surprise- LLActRep- BwNot-
LnkCtl: ASPM L1 Enabled; RCB 64 bytes Disabled- Retrain- CommClk+
ExtSynch- ClockPM+ AutWidDis- BWInt- AutBWInt-
LnkSta: Speed 2.5GT/s, Width x1, TrErr- Train- SlotClk+ DLActive- BWMgmt- ABWMgmt-
DevCap2: Completion Timeout: Range ABCD, TimeoutDis+
DevCtl2: Completion Timeout: 50us to 50ms, TimeoutDis-
LnkCtl2: Target Link Speed: 2.5GT/s, EnterCompliance- SpeedDis-, Selectable De-emphasis: -6dB
Transmit Margin: Normal Operating Range, EnterModifiedCompliance- ComplianceSOS-
Compliance De-emphasis: -6dB
LnkSta2: Current De-emphasis Level: -6dB
Capabilities: [b0] MSI-X: Enable- Count=4 Masked-
Vector table: BAR=4 offset=00000000
PBA: BAR=4 offset=00000800
Capabilities: [d0] Vital Product Data
Unknown small resource type 00, will not decode more.
Capabilities: [100 v1] Advanced Error Reporting
UESta: DLP- SDES- TLP- FCP- CmpltTO- CmpltAbrt- UnxCmplt- RxOF- MalfTLP- ECRC- UnsupReq- ACSViol-
UEMsk: DLP- SDES- TLP- FCP- CmpltTO- CmpltAbrt- UnxCmplt- RxOF- MalfTLP- ECRC- UnsupReq- ACSViol-
UESvrt: DLP+ SDES+ TLP- FCP+ CmpltTO- CmpltAbrt- UnxCmplt- RxOF+ MalfTLP+ ECRC- UnsupReq- ACSViol-
CESta: RxErr- BadTLP- BadDLLP- Rollover- Timeout- NonFatalErr-
CEMsk: RxErr- BadTLP- BadDLLP- Rollover- Timeout- NonFatalErr+
AERCap: First Error Pointer: 00, GenCap+ CGenEn- ChkCap+ ChkEn-
Capabilities: [140 v1] Virtual Channel
Caps: LPEVC=0 RefClk=100ns PATEntryBits=1
Arb: Fixed- WRR32- WRR64- WRR128-
Ctrl: ArbSelect=Fixed
Status: InProgress-
VC0: Caps: PATOffset=00 MaxTimeSlots=1 RejSnoopTrans-
Arb: Fixed- WRR32- WRR64- WRR128- TWRR128- WRR256-
Ctrl: Enable+ ID=0 ArbSelect=Fixed TC/VC=ff
Status: NegoPending- InProgress-
Capabilities: [160 v1] Device Serial Number 00-00-00-00-00-00-00-00
Capabilities: [170 v1] Latency Tolerance Reporting
Max snoop latency: 71680ns
Max no snoop latency: 71680ns
Kernel driver in use: r8169
Kernel modules: r8169