Re: [Regression, post-2.6.37-rc2] Unable to start KDE with 2.6.37-rc3 on Acer Ferrari One

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On Tue, Nov 23, 2010 at 8:45 PM, Rafael J. Wysocki <rjw@xxxxxxx> wrote:
> On Wednesday, November 24, 2010, Alex Deucher wrote:
>> 2010/11/23 Rafael J. Wysocki <rjw@xxxxxxx>:
>> > On Wednesday, November 24, 2010, Rafael J. Wysocki wrote:
>> >> Hi,
>> >>
>> >> I cannot start KDE with the 2.6.37-rc3 kernel.  The X server and display
>> >> manager start normally, but when I attempt to log into KDE, it attempts to
>> >> start, but then the X apparently crashes and this appears in the dmesg output:
>> >>
>> >> [   24.342287] radeon 0000:01:05.0: r600_cs_track_validate_cb offset[0] 0 46097920 4325376 too big
>> >> [   24.342298] radeon 0000:01:05.0: r600_packet3_check:1331 invalid cmd stream 502
>> >> [   24.342304] [drm:radeon_cs_ioctl] *ERROR* Invalid command stream !
>> >> [   24.694106] [drm:drm_mode_getfb] *ERROR* invalid framebuffer id
>> >> [   93.938946] radeon 0000:01:05.0: r600_cs_track_validate_cb offset[0] 0 46097920 4325376 too big
>> >> [   93.938956] radeon 0000:01:05.0: r600_packet3_check:1331 invalid cmd stream 502
>> >> [   93.938962] [drm:radeon_cs_ioctl] *ERROR* Invalid command stream !
>> >> [   94.278050] [drm:drm_mode_getfb] *ERROR* invalid framebuffer id
>> >> [  114.898043] radeon 0000:01:05.0: r600_cs_track_validate_cb offset[0] 0 46097920 4325376 too big
>> >> [  114.898053] radeon 0000:01:05.0: r600_packet3_check:1331 invalid cmd stream 502
>> >> [  114.898058] [drm:radeon_cs_ioctl] *ERROR* Invalid command stream !
>> >> [  115.266113] [drm:drm_mode_getfb] *ERROR* invalid framebuffer id
>> >> [  129.722472] [drm:drm_mode_getfb] *ERROR* invalid framebuffer id
>> >> [  142.984314] radeon 0000:01:05.0: r600_cs_track_validate_cb offset[0] 0 46097920 4325376 too big
>> >> [  142.984324] radeon 0000:01:05.0: r600_packet3_check:1331 invalid cmd stream 502
>> >> [  142.984330] [drm:radeon_cs_ioctl] *ERROR* Invalid command stream !
>> >> [  143.370083] [drm:drm_mode_getfb] *ERROR* invalid framebuffer id
>> >>
>> >> This doesn't happen with 2.6.37-rc2.
>> >
>> > Reverting the following commit:
>> >
>> > commit 16790569eddf4d406a16a65f4750f405fa669c52
>> > Author: Alex Deucher <alexdeucher@xxxxxxxxx>
>> > Date:   Sun Nov 14 20:24:35 2010 -0500
>> >
>> >    drm/radeon/kms: fix and unify tiled buffer alignment checking for r6xx/7xx
>> >
>> > fixes the issue for me (so everyone involved is already in the Cc list ;-)).
>> >
>>
>> Are you sure you've got the right commit?
>
> Well, as I said, I reverted that particular commit and things started to work.
>
>> That shouldn't change the calculation that's failing at all.  I'd guess it's
>> probably one of these:
>> http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commitdiff;h=d33ef52d9db8a36900dd53f2e32db9a521ace259
>> http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commitdiff;h=f30df2fad0c901e74ac9a52a488a54c69a373a41
>
> I don't know.  Perhaps there are some interactions between the two and the
> reverted one.  I can try reverting these tomorrow if you want me to.

Can you try just reverting this patch:
http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commitdiff;h=d33ef52d9db8a36900dd53f2e32db9a521ace259

I think the real issue is a bug in the 3D driver (probably a flush at
the wrong time) that one of these commits exposing.

Alex

>
>> Can you attach your xorg log as well?
>
> Sure, attached (the working case).
>
> Thanks,
> Rafael
>
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