acpi breaks async interface

From: Juraj Bednar (juraj@bednar.sk)
Date: Mon Feb 05 2001 - 18:46:42 EST


Hello,

 I just found a strange thing in 2.4.1 (don't know, if the same
occured in 2.4.0) and 2.4.1-ac3. When I enable ACPI, my serial
port starts to drop some characters. When making ppp over this
and doing ping, it causes great packet losts. If I turn ACPI in
this configuration off, it works with no problems. I tried to
switch serial port IRQ to other one (was 4, switched to 3 and
tested) and it didn't help. Maybe something's broken.

 ACPI related boot messages:

Feb 4 23:21:58 idoru kernel: ACPI: Core Subsystem version [20010125]
Feb 4 23:21:58 idoru kernel: ACPI: Subsystem enabled
Feb 4 23:21:58 idoru kernel: ACPI: System firmware supports: C2 C3
Feb 4 23:21:58 idoru kernel: ACPI: System firmware supports: S0 S1 S4 S5

[root@idoru log]# cat /proc/interrupts
           CPU0
  0: 57278 XT-PIC timer
  1: 2658 XT-PIC keyboard
  2: 0 XT-PIC cascade
  4: 49530 XT-PIC serial
  5: 1 XT-PIC soundblaster
 10: 15 XT-PIC aha152x
 11: 60 XT-PIC eth0
 12: 27772 XT-PIC PS/2 Mouse
 14: 213118 XT-PIC ide0
 15: 3298 XT-PIC ide1
NMI: 0
LOC: 0
ERR: 0

           Have a nice day,
                  Juraj.

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This archive was generated by hypermail 2b29 : Wed Feb 07 2001 - 21:00:23 EST