[Bug 65963] screen goes blank, Linux hangs - Radeon 7870, Gallium, Glamor

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=65963

Damian Nowak <nowaker at geozone.pl> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|RESOLVED                    |REOPENED
         Resolution|FIXED                       |---

--- Comment #4 from Damian Nowak <nowaker at geozone.pl> ---
This has recently returned.

At random points my system just hangs. Everything dies, so even no SSH
connection is possible to the machine. Today however display hung, CTRL+ALT+F1
was not usable as usual, but SSH worked. I was able to inspect dmesg (totally
nothing related to the crash) and Xorg.0.log (error message and stacktrace!).

I am sure this is a regression. I have never encountered this broblem on mesa
10.1.3 and llvm 3.4. I held these versions on my system for quite a long time
and refrained to update to the latest versions because of some problem with
Steam. (FYI https://bbs.archlinux.org/viewtopic.php?pid=1432315#p1432315)

Right after I updated to mesa 10.2.2 and llvm 3.4.2 three days ago my system
started hanging randomly from 2 to 5 times a day. I am 100% sure it's either
mesa 10.1.3 -> 10.2.2 bump or llvm 3.4 -> 3.4.2.

In the meantime I will try installing various combinations of mesa (10.1.3,
10.1.4, 10.2.0rc1-5, 10.2.1, 10.2.2) and llvm (3.4, 3.4.1, 3.4.2) to find which
package exactly triggers the problem.

Using Arch Linux 3.15.3.

(EE) [mi] EQ overflow continuing.  1000 events have been dropped.
(EE) [mi] No further overflow reports will be reported until the clog is
cleared.
(EE) 
(EE) Backtrace:
(EE) 0: /usr/bin/X (xorg_backtrace+0x56) [0x58f186]
(EE) 1: /usr/bin/X (QueuePointerEvents+0x52) [0x44e602]
(EE) 2: /usr/lib/xorg/modules/input/evdev_drv.so (0x7f27799c9000+0x60ba)
[0x7f27799cf0ba]
(EE) 3: /usr/lib/xorg/modules/input/evdev_drv.so (0x7f27799c9000+0x657d)
[0x7f27799cf57d]
(EE) 4: /usr/bin/X (0x400000+0x74d18) [0x474d18]
(EE) 5: /usr/bin/X (0x400000+0x9e5b9) [0x49e5b9]
(EE) 6: /usr/lib/libpthread.so.0 (0x7f2780855000+0xf4b0) [0x7f27808644b0]
(EE) 7: /usr/lib/libc.so.6 (ioctl+0x7) [0x7f277f583e47]
(EE) 8: /usr/lib/libdrm.so.2 (drmIoctl+0x28) [0x7f278064c9b8]
(EE) 9: /usr/lib/libdrm.so.2 (drmCommandWrite+0x1b) [0x7f278064ec2b]
(EE) 10: /usr/lib/xorg/modules/dri/radeonsi_dri.so (0x7f2778d4a000+0x69014)
[0x7f2778db3014]
(EE) 11: /usr/lib/xorg/modules/dri/radeonsi_dri.so (0x7f2778d4a000+0x6a3c2)
[0x7f2778db43c2]
(EE) 12: /usr/lib/xorg/modules/dri/radeonsi_dri.so (0x7f2778d4a000+0x5d431)
[0x7f2778da7431]
(EE) 13: /usr/lib/xorg/modules/dri/radeonsi_dri.so (0x7f2778d4a000+0x19f0f9)
[0x7f2778ee90f9]
(EE) 14: /usr/lib/xorg/modules/dri/radeonsi_dri.so (0x7f2778d4a000+0x11e560)
[0x7f2778e68560]
(EE) 15: /usr/lib/xorg/modules/dri/radeonsi_dri.so (0x7f2778d4a000+0x1a14a5)
[0x7f2778eeb4a5]
(EE) 16: /usr/lib/xorg/modules/dri/radeonsi_dri.so (0x7f2778d4a000+0x11f674)
[0x7f2778e69674]
(EE) 17: /usr/lib/xorg/modules/dri/radeonsi_dri.so (0x7f2778d4a000+0x11f8d2)
[0x7f2778e698d2]
(EE) 18: /usr/lib/libglamor.so.0 (0x7f277d11d000+0x2071b) [0x7f277d13d71b]
(EE) 19: /usr/lib/libglamor.so.0 (0x7f277d11d000+0x20ac8) [0x7f277d13dac8]
(EE) 20: /usr/lib/libglamor.so.0 (0x7f277d11d000+0x1ccab) [0x7f277d139cab]
(EE) 21: /usr/bin/X (0x400000+0x17fad8) [0x57fad8]
(EE) 22: /usr/bin/X (0x400000+0xc40da) [0x4c40da]
(EE) 23: /usr/bin/X (0x400000+0x33cdb) [0x433cdb]
(EE) 24: /usr/bin/X (0x400000+0x36b2f) [0x436b2f]
(EE) 25: /usr/bin/X (0x400000+0x3ad16) [0x43ad16]
(EE) 26: /usr/lib/libc.so.6 (__libc_start_main+0xf0) [0x7f277f4c2000]
(EE) 27: /usr/bin/X (0x400000+0x250fe) [0x4250fe]

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