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Bug 680120

Summary: Xorg crashes with -vga qxl
Product: Red Hat Enterprise Linux 6 Reporter: Lubos Kocman <lkocman>
Component: xorg-x11-drv-qxlAssignee: Søren Sandmann Pedersen <sandmann>
Status: CLOSED ERRATA QA Contact: Desktop QE <desktop-qa-list>
Severity: urgent Docs Contact:
Priority: urgent    
Version: 6.1CC: djasa, jrb, kem, mkenneth, mkrcmari, tburke, uril, virt-maint
Target Milestone: rcKeywords: Regression, TestBlocker, Triaged
Target Release: ---   
Hardware: Unspecified   
OS: Linux   
Whiteboard:
Fixed In Version: xorg-x11-drv-qxl-0.0.12-6.el6 Doc Type: Bug Fix
Doc Text:
Story Points: ---
Clone Of: Environment:
Last Closed: 2011-05-19 14:23:24 UTC Type: ---
Regression: --- Mount Type: ---
Documentation: --- CRM:
Verified Versions: Category: ---
oVirt Team: --- RHEL 7.3 requirements from Atomic Host:
Cloudforms Team: --- Target Upstream Version:
Embargoed:
Attachments:
Description Flags
switching to console after crash.
none
backtrace of crashing Xorg
none
Xorg.log
none
Xorg -configure none

Description Lubos Kocman 2011-02-24 12:20:55 UTC
Description of problem:


Run RHEL6.1 guest in qemu-kvm with -vga qxl. Xorg will crash and restart itself in less than 10 seconds.


Version-Release number of selected component (if applicable):

qemu-kvm-0.12.1.2-2.147.el6.x86_64
spice-server-0.7.2-4.el6.x86_64


How reproducible:


Steps to Reproduce:
1. qemu-kvm -vga qxl -spice port=3001,disable-ticketing -m 1024 /yourguest
2. spicec -h localhost -p 3001
3. login to gdm
4. run few applications like soffice, firefox, gnome-system-monitor
  
Actual results:

Xorg crashes in 10-20 seconds after X startup

Expected results:

Xorg won't crash

Additional info:

It does happen with -spice ... -vga qxl and guest driver {qxl,vesa}

(Xorg will not even start with vesa ... could be a separate bug ...)

It does not happen -spice port=3001,... (but without -vga qxl)
It does not happen with vnc

Comment 3 Lubos Kocman 2011-02-24 14:13:21 UTC
Created attachment 480767 [details]
switching to console after crash.

Comment 4 Lubos Kocman 2011-02-24 14:13:45 UTC
Switching to console after the crash cause lots of defects on the canvas

Comment 5 David Jaša 2011-03-04 15:34:46 UTC
Just before this crash, when I typed arrow up into gnome-terminal, the terminal printed "A", then it printed "B" for arrow down.

Comment 6 Alon Levy 2011-03-07 12:18:53 UTC
What's the qxl version in the guest? package xorg-x11-drv-qxl.
What is in /var/log/Xorg.0.log?

Comment 7 Uri Lublin 2011-03-16 16:15:44 UTC
We are not sure if that bug is a duplicate of #678208 or a bug on its own.
We asked QE to test if they can reproduce this bug with the fix (scratch build) for 678208.

Comment 8 Marian Krcmarik 2011-03-16 19:02:50 UTC
(In reply to comment #7)
> We are not sure if that bug is a duplicate of #678208 or a bug on its own.
> We asked QE to test if they can reproduce this bug with the fix (scratch build)
> for 678208.

We (QE) consider this to be a bug and not a duplicate of #678208. Two of us tested for several hours with scratch build for qemu-kvm and Xorg crash appears quite often while we haven't got the hang reported in 678208 at all.
Tried 3 different RHEL6.1 64/32bit guests and all the same - seen Xorg crash and no hang of qemu-kvm.

Moreover I tried uri's scratch build of qxl https://brewweb.devel.redhat.com/taskinfo?taskID=3175820 and unfortunately I still get Xorg crash on RHEL6.1 32/64 bit.

Comment 9 Uri Lublin 2011-03-17 12:24:51 UTC
Note that according to https://bugzilla.redhat.com/show_bug.cgi?id=678208#c12
there exists a workaround: 
yum downgrade to xorg-x11-drv-qxl-0.0.12-2.1

Comment 11 Søren Sandmann Pedersen 2011-03-17 14:50:58 UTC
Please try this:

- log in to the guest remotely

- Run   gdb --pid <pid of X server>

- Get X to crash

- Type  bt   into gdb.

Also, as Alon said, please attach the log file, /var/log/Xorg.0.log produced by a crashing X server.

Comment 12 Marian Krcmarik 2011-03-17 17:20:50 UTC
Created attachment 486069 [details]
backtrace of crashing Xorg

Comment 13 Marian Krcmarik 2011-03-17 17:21:21 UTC
Created attachment 486070 [details]
Xorg.log

Comment 14 Marian Krcmarik 2011-03-17 17:22:03 UTC
Attached Xorg.log and bt (hopefully) above.

Comment 15 Søren Sandmann Pedersen 2011-03-17 19:40:10 UTC
      Bad bpp: 1 (1)
      Zero width or height
      Bad bpp: 1 (1)
   Out of memory allocating 16384020 bytes
   Out of mem - stats

As I have mentioned before, we need to increase the amount of video memory available to the qxl device ; otherwise, it will sometimes do this.

I believe the command line option that should be given to qemu is something like this:

     -global qxl.vram_size=268435456

Comment 16 Søren Sandmann Pedersen 2011-03-18 17:23:59 UTC
Can you attach your xorg.conf please?

Comment 17 Marian Krcmarik 2011-03-18 21:46:41 UTC
(In reply to comment #16)
> Can you attach your xorg.conf please?

In case the question is related to my configuration I attach Xorg -configure. Otherwise I use built-in configuration.

Comment 18 Marian Krcmarik 2011-03-18 21:47:44 UTC
Created attachment 486328 [details]
Xorg -configure

Comment 19 Søren Sandmann Pedersen 2011-03-20 17:20:17 UTC
Fixed in 0.0.12-6.el6

Comment 23 errata-xmlrpc 2011-05-19 14:23:24 UTC
An advisory has been issued which should help the problem
described in this bug report. This report is therefore being
closed with a resolution of ERRATA. For more information
on therefore solution and/or where to find the updated files,
please follow the link below. You may reopen this bug report
if the solution does not work for you.

http://rhn.redhat.com/errata/RHBA-2011-0756.html