Bug 55980

Missing... 
When X go to segfault my monitor go to poweroff and only a reboot permit to return to a normal status.

With gdb problem is happens after 5/6 resolutions change (I thinks that could be relative to a delay required on driver to do this syscall).
However, after these resize this is gdb backtrace:

Program received signal SIGSEGV, Segmentation fault.
0x00007f46ee14f860 in ?? () from /lib64/libc.so.6
(gdb) bt
#0  0x00007f46ee14f860 in ?? () from /lib64/libc.so.6
#1  0x00007f46ec40eb75 in exaMemcpyBox (pbox=<optimized out>, src=<optimized out>, src_pitch=448, dst=<optimized out>, dst_pitch=436, 
    pPixmap=<optimized out>) at /usr/include/bits/string3.h:52
#2  0x00007f46ec40eeb4 in exaCopyDirty (migrate=<optimized out>, pValidDst=0x1e6b8e0, pValidSrc=0x1e6b8f0, transfer=0x7f46eceb9513, fallback_index=1, 
    sync=0x7f46ec40d9c0 <exaWaitSync>) at /var/tmp/portage/x11-base/xorg-server-1.13.0/work/xorg-server-1.13.0/exa/exa_migration_classic.c:240
#3  0x00007f46ec4117f0 in exaPrepareAccessReg_mixed (pPixmap=0x1e6b840, index=<optimized out>, pReg=0x0)
    at /var/tmp/portage/x11-base/xorg-server-1.13.0/work/xorg-server-1.13.0/exa/exa_migration_mixed.c:254
#4  0x00007f46ec41afe5 in ExaCheckPolyFillRect (pDrawable=0x20a7cc0, pGC=0x1b3e8d0, nrect=1, prect=0x200ad40)
    at /var/tmp/portage/x11-base/xorg-server-1.13.0/work/xorg-server-1.13.0/exa/exa_unaccel.c:311
#5  0x00007f46ec41455c in exaPolyFillRect (pDrawable=0x20a7cc0, pGC=0x1b3e8d0, nrect=1, prect=0x200ad40)
    at /var/tmp/portage/x11-base/xorg-server-1.13.0/work/xorg-server-1.13.0/exa/exa_accel.c:849
#6  0x00000000005057e7 in damagePolyFillRect (pDrawable=0x20a7cc0, pGC=0x1b3e8d0, nRects=1, pRects=0x200ad40)
    at /var/tmp/portage/x11-base/xorg-server-1.13.0/work/xorg-server-1.13.0/miext/damage/damage.c:1250
#7  0x000000000055ad9c in miPaintWindow (pWin=<optimized out>, prgn=<optimized out>, what=<optimized out>)
    at /var/tmp/portage/x11-base/xorg-server-1.13.0/work/xorg-server-1.13.0/mi/miexpose.c:641
#8  0x000000000055b01f in miWindowExposures (pWin=0x20a7cc0, prgn=0x22853c0, other_exposed=0x0)
    at /var/tmp/portage/x11-base/xorg-server-1.13.0/work/xorg-server-1.13.0/mi/miexpose.c:470
#9  0x0000000000487472 in xf86XVWindowExposures (pWin=0x20a7cc0, reg1=0x22853c0, reg2=<optimized out>)
    at /var/tmp/portage/x11-base/xorg-server-1.13.0/work/xorg-server-1.13.0/hw/xfree86/common/xf86xv.c:1171
#10 0x0000000000570756 in miHandleValidateExposures (pWin=0x1b3ea60)
    at /var/tmp/portage/x11-base/xorg-server-1.13.0/work/xorg-server-1.13.0/mi/miwindow.c:223
#11 0x0000000000461274 in SetRootClip (pScreen=0x1ad5230, enable=0)
    at /var/tmp/portage/x11-base/xorg-server-1.13.0/work/xorg-server-1.13.0/dix/window.c:3649
#12 0x00007f46ec40b9df in exaXorgEnableDisableFBAccess (pScrn=0x1ac93b0, enable=0)
    at /var/tmp/portage/x11-base/xorg-server-1.13.0/work/xorg-server-1.13.0/hw/xfree86/exa/examodule.c:100
#13 0x00000000004b0293 in xf86CursorEnableDisableFBAccess (pScrn=0x1ac93b0, enable=0)
    at /var/tmp/portage/x11-base/xorg-server-1.13.0/work/xorg-server-1.13.0/hw/xfree86/ramdac/xf86Cursor.c:226
#14 0x000000000046f2c5 in xf86VTSwitch () at /var/tmp/portage/x11-base/xorg-server-1.13.0/work/xorg-server-1.13.0/hw/xfree86/common/xf86Events.c:441
#15 xf86Wakeup (blockData=<optimized out>, err=<optimized out>, pReadmask=<optimized out>)
    at /var/tmp/portage/x11-base/xorg-server-1.13.0/work/xorg-server-1.13.0/hw/xfree86/common/xf86Events.c:285
#16 0x0000000000438597 in WakeupHandler (result=1, pReadmask=0x80ea60)
    at /var/tmp/portage/x11-base/xorg-server-1.13.0/work/xorg-server-1.13.0/dix/dixutils.c:423
#17 0x0000000000575477 in WaitForSomething (pClientsReady=0x1c94740)
    at /var/tmp/portage/x11-base/xorg-server-1.13.0/work/xorg-server-1.13.0/os/WaitFor.c:224
#18 0x0000000000434339 in Dispatch () at /var/tmp/portage/x11-base/xorg-server-1.13.0/work/xorg-server-1.13.0/dix/dispatch.c:357
#19 0x00000000004248fa in main (argc=10, argv=<optimized out>, envp=<optimized out>)
    at /var/tmp/portage/x11-base/xorg-server-1.13.0/work/xorg-server-1.13.0/dix/main.c:295

It looks more like xserver bug. Because of zero appearance of Nouveau in the callchain it's not certain you are using Nouveau...
Please follow instructions from http://nouveau.freedesktop.org/wiki/Bugs#HowToReport and attach dmesg and xorg logs.

Hi,

I confirm that with xorg-server-1.12.4 this doesn't happens.
I move bug to Server/Acceleration/EXA.

Thanks for reply.

Bye

geaaru

Can you bisect xserver? Note that you may need to rebuild the drivers against xserver after each bisection step.

Hi, i do other test about this problem and I found that problem is relative to kernel nouveau driver and not to X.

I test this with different xorg-server versions:
- 1.12.4,
- 1.13.0
- 1.13.1 (current installed version)

and with xf86-video-nouveau:

- 1.0.1
- 1.0.2
- 1.0.3
- 1.0.4

and with different kernel:

- 3.7.0
- 3.6.8
- 3.6.4
- 3.5.7
- 3.4.24
- 3.2.35
- 3.0.17

With my test i see that only with 3.0.17 and 3.2.35 all works fine.

I'm sure that problems is on kernel driver.

Are there big changes between 3.2.35 and > 3.4 for nouveau kernel driver ?

I move this bug again to nouveau/driver but I'm not sure that is right. Sorry if is wrong.

Thanks

Can you confirm whether this still happens with the latest kernel/xf86-video-nouveau/Xorg? If so, please provide a complete dmesg and Xorg.0.log after the issue happens.

No response to re-test request in over a month. Closing as invalid.

Sorry for delay.

I test with last driver and seems that segfault doesn't happens. But I see that resolution change automatically if a leave screen off. But probably could be relative to a wrong EDID message from my old CRT monitor.
So, we can consider resolved this issue.

Thank you very much for support.