[Bug 65192] [r600g] Screensavers lock up machine (screen goes blank, keyboard unresponsive, sound loops; sysrq/ssh possible)

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=65192

--- Comment #9 from Luzipher <luziphermcleod at yahoo.ie> ---
Unfortunately I couldn't confirm my thoughts. But I still am quite sure I did
not have those problems earlier - I had screensavers and youtube last year and
didn't notice regular crashes. I frequently use this linux installation, in
fact it's my main os for several years now, so I really would have noticed.
Maybe it's another package ? X, libdrm, radeon-ucode, xf86-video-ati come to
mind. Maybe mostly radeon-ucode, as I have the feeling that the problems
started at about the same time as the buzz on the uvd code drop.

Well, tests done (I could reproduce the crash on every of these with directly
started juggler3d on closing the window, mostly first or second try):

mesa-9.0.3 (forgot to get glxinfo)

mesa-9.0.1.ebuild, glxinfo:
OpenGL renderer string: Gallium 0.4 on AMD RV770
OpenGL version string: 3.0 Mesa 9.0.1
OpenGL shading language version string: 1.30

mesa-8.0.4-r1.ebuild, glxinfo:
OpenGL renderer string: Gallium 0.4 on AMD RV770
OpenGL version string: 2.1 Mesa 8.0.4
OpenGL shading language version string: 1.20
with 8.0.4, I got only garbage and a lot of these messages:
radeon: The kernel rejected CS, see dmesg for more information.
dmesg:
[ 1580.805418] radeon 0000:02:00.0: r600_cs_track_validate_cb invalid tiling 6
for 0 (0x08110668)
[ 1580.805463] radeon 0000:02:00.0: r600_packet3_check:1720 invalid cmd stream
573
[ 1580.805465] [drm:radeon_cs_ib_chunk] *ERROR* Invalid command stream !



I also tried the oldest kernel I have with 8.0.4, it's a vanilla 3.4.0-rc6.
Even there I could get the same crash after closing the window with the garbage
output.

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