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    SubjectRe: [Regression, post-2.6.37-rc2] Unable to start KDE with 2.6.37-rc3 on Acer Ferrari One
    From
    2010/11/23 Rafael J. Wysocki <rjw@sisk.pl>:
    > 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@gmail.com>
    > 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? 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

    Can you attach your xorg log as well?

    Alex

    > Thanks,
    > Rafael
    >
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