Re: Possible 3.13-rc nouveau regression with GT 560 Ti
From: Ilia Mirkin
Date: Wed Jan 01 2014 - 13:46:47 EST
On Wed, Jan 1, 2014 at 9:04 AM, Sid Boyce <sboyce@xxxxxxxxxxxxxxxx> wrote:
> On 01/01/14 00:55, Ilia Mirkin wrote:
>> On Tue, Dec 31, 2013 at 7:41 PM, Sid Boyce <sboyce@xxxxxxxxxxxxxxxx>
>>> On 31/12/13 10:36, Ilia Mirkin wrote:
>>>> Having a dmesg would be nice. One thing I can think of off-hand is
>>>> that 3.13-rc has MSI turned on by default. You can turn it off by
>>>> adding "nouveau.config=NvMSI=0" to your kernel cmdline. If that
>>>> doesn't help, a bisect restricted to drivers/gpu/drm/nouveau should
>>>> show the offending commit fairly quickly.
>>> Adding "nouveau.config=NvMSI=0" to the command line fixed the problem.
>>> So it looks like commit 049ffa8ab33a63b3bff672d1a0ee6a35ad253fe8
>> Any chance you might mmiotrace the blob (version 325 or later) to see
>> which registers it fiddles with? Or alternatively, if you have a NVCE
>> card (you never did end up providing the logs which would have made
>> that apparent), could you try replacing nvc3_mc_oclass with
>> nvc0_mc_oclass for the 0xce case in
>> drivers/gpu/drm/nouveau/core/engine/device/nvc0.c? (and boot without
>> the MSI disabling.) The switch has already been made for NVC8 in
>> 0bae1d61c75 -- perhaps there are more "odd" ones.
> Fails exactly the same.
> case 0xc3:
> device->cname = "GF106";
> device->oclass[NVDEV_SUBDEV_VBIOS ] = &nouveau_bios_oclass;
> device->oclass[NVDEV_SUBDEV_GPIO ] = &nv50_gpio_oclass;
> device->oclass[NVDEV_SUBDEV_I2C ] = &nv94_i2c_oclass;
> device->oclass[NVDEV_SUBDEV_CLOCK ] = &nvc0_clock_oclass;
> device->oclass[NVDEV_SUBDEV_THERM ] = &nva3_therm_oclass;
> device->oclass[NVDEV_SUBDEV_MXM ] = &nv50_mxm_oclass;
> device->oclass[NVDEV_SUBDEV_DEVINIT] = &nvc0_devinit_oclass;
> device->oclass[NVDEV_SUBDEV_MC ] = nvc0_mc_oclass;
> device->oclass[NVDEV_SUBDEV_BUS ] = nvc0_bus_oclass;
> device->oclass[NVDEV_SUBDEV_TIMER ] = &nv04_timer_oclass;
That's the 0xc3 case... you have a nvce card, not nvc3 -- you would
need to change the NVDEV_SUBDEV_MC line to nvc0_mc_oclass for the 0xce
> The dmesg and Xorg.0.log with the problem captured across a ssh link.
> # ps fax|grep X
> 5633 pts/0 S+ 0:00 \_ grep --color=auto X
> 5160 tty7 Ss+ 0:08 \_ /usr/bin/Xorg -br :0 vt7 -nolisten tcp -auth
> # echo mmiotrace > /sys/kernel/debug/tracing/current_tracer
> -bash: echo: write error: Invalid argument.
Take a look at https://wiki.ubuntu.com/X/MMIOTracing
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