[Nouveau] Possible 3.13-rc nouveau regression with GT 560 Ti

[Sid Boyce]

On 01/01/14 00:55, Ilia Mirkin wrote:
> On Tue, Dec 31, 2013 at 7:41 PM, Sid Boyce <sboyce at blueyonder.co.uk> wrote:
>> On 31/12/13 10:36, Ilia Mirkin wrote:
>>> On Tue, Dec 31, 2013 at 5:14 AM, Sid Boyce <sboyce at blueyonder.co.uk>
>>> wrote:
>>>> System x86_64 with openSUSE 13.1.
>>>> X.Org version: 1.14.99.905
>>>>
>>>> openSUSE 12.2 kernels boot successfully into a graphical screen, login to
>>>> KDE4, etc. all normal.
>>>>
>>>> 3.13-rc kernels boot fully with X running but no graphical screen and it
>>>> freezes in VC with not all the startup messages displayed but I could ssh
>>>> in
>>>> from another box to check dmesg and logs.
>>>>
>>>> Xorg.0.log which I thought I had saved did not log an error.
>>>>
>>>> dmesg said "nouveau Playlist update failed".
>>>>
>>>> Changed the GeForce GT 560 Ti for a GeForce 8600 GT and 3.13.0-rc6 is up
>>>> and
>>>> running.
>>>>
>>>> If necessary I can go back to the GT 560 Ti to gather dmesg and Xorg log
>>>> information.
>>> 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.
>>>
>>>     -ilia
>>>
>> Adding "nouveau.config=NvMSI=0" to the command line fixed the problem.
>> So it looks like commit 049ffa8ab33a63b3bff672d1a0ee6a35ad253fe8 introduced
>> it.
> 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.
>
>    -ilia
>
I'll have a look tomorrow - it is a NVCE card..
With everything running at the moment
# echo mmiotrace > /sys/kernel/debug/tracing/current_tracer
bash: echo: write error: Invalid argument

I shall build a new kernel (3.13.0-rc51) with the change
         case 0xce:
                 device->cname = "GF114";
                 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     ] = nvc3_mc_oclass;

Regards
Sid.

-- 
Sid Boyce ... Hamradio License G3VBV, Licensed Private Pilot
Emeritus IBM/Amdahl Mainframes and Sun/Fujitsu Servers Tech Support
Senior Staff Specialist, Cricket Coach
Microsoft Windows Free Zone - Linux used for all Computing Tasks

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