Bug 524242 - Xorg segfault with intel graphics driver on 915G
Summary: Xorg segfault with intel graphics driver on 915G
Status: CLOSED DUPLICATE of bug 521350
Alias: None
Product: Red Hat Enterprise Linux 5
Classification: Red Hat
Component: xorg-x11-drv-i810
Version: 5.4
Hardware: i386
OS: Linux
Target Milestone: ---
: ---
Assignee: Adam Jackson
QA Contact: desktop-bugs@redhat.com
Whiteboard: card_915G
Depends On:
TreeView+ depends on / blocked
Reported: 2009-09-18 13:51 UTC by Doug Kelly
Modified: 2010-07-23 16:54 UTC (History)
0 users

Fixed In Version:
Doc Type: Bug Fix
Doc Text:
Clone Of:
Last Closed: 2010-07-23 16:54:37 UTC

Attachments (Terms of Use)
Xorg.log with ModeDebug on on an affected system (19.81 KB, text/plain)
2009-09-18 13:51 UTC, Doug Kelly
no flags Details
gdb backtrace (6.52 KB, text/plain)
2009-09-18 13:52 UTC, Doug Kelly
no flags Details
xorg.conf from affected machine (597 bytes, text/plain)
2009-09-18 13:52 UTC, Doug Kelly
no flags Details
lspci -vvv output (14.21 KB, text/plain)
2009-09-18 13:53 UTC, Doug Kelly
no flags Details

Description Doug Kelly 2009-09-18 13:51:33 UTC
Created attachment 361662 [details]
Xorg.log with ModeDebug on on an affected system

Description of problem:
On certain older Intel integrated graphics chipsets, I have a problem which causes the X server to segfault and leave the display in an unusable state until a reboot.  This only happens with the "intel" driver, and is not happening with the i810 driver.  The system I'm testing on is a Dell OptiPlex GX280, which seems to report from the driver that there is a 915G chipset.  I've attached a full output from lspci, so that should give a more accurate picture.  I've also seen the issue with the older GX260.  Newer hardware has a different problem that I believe is unrelated.

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

How reproducible:
100% on affected hardware

Steps to Reproduce:
1. Configure xorg.conf to use the "intel" graphics driver (the default being selected for this chipset).
2. Start X
3. Reconfiguring to use "i810" and restarting X works (you can hear the system beep from GDM), but the display is still in an unusable/blank state.
Actual results:
X segfaults, results in the display being left in an unusable state (can't switch VTs, responsive to network--so I can reboot it remotely).

Expected results:
X server should start and not segfault.

Additional info:
This issue occurred immediately after our update to RHEL5.4, and all associated packages.  However, before that point, updates had not been run for a significant amount of time (roughly three or four months).

I've specifically set this to i386 as I have not attempted to reproduce the issue on x86_64.  Only a few GX280s have the ability to run 64-bit code at all--if I can find one that will, I'll try it.

Comment 1 Doug Kelly 2009-09-18 13:52:13 UTC
Created attachment 361663 [details]
gdb backtrace

Comment 2 Doug Kelly 2009-09-18 13:52:57 UTC
Created attachment 361664 [details]
xorg.conf from affected machine

Comment 3 Doug Kelly 2009-09-18 13:53:59 UTC
Created attachment 361665 [details]
lspci -vvv output

Comment 4 Doug Kelly 2009-09-18 14:03:14 UTC
Actually looks to be a duplicate of #521350, so close this one if desired.

Comment 5 Chris Campbell 2010-01-23 22:26:48 UTC

Fedora Bugzappers volunteer triage team

Comment 6 Matěj Cepl 2010-07-23 16:53:00 UTC
0: /usr/bin/Xorg(xf86SigHandler+0x81) [0x80cedc1]
1: [0x3ac420]
2: /usr/lib/xorg/modules/libi2c.so(xf86I2CFindDev+0x29) [0x1f43b9]
3: /usr/lib/xorg/modules/libddc.so [0x1ebe75]
4: /usr/lib/xorg/modules/libddc.so(xf86DoEEDID+0x102) [0x1ec122]
5: /usr/bin/Xorg(xf86OutputGetEDID+0x40) [0x80f6230]
6: /usr/lib/xorg/modules/drivers/intel_drv.so(i830_ddc_get_modes+0x2c) [0x369a1c]
7: /usr/bin/Xorg(xf86ProbeOutputModes+0x28e) [0x80f71de]
8: /usr/bin/Xorg(xf86InitialConfiguration+0x14a) [0x80f89fa]
9: /usr/lib/xorg/modules/drivers/intel_drv.so [0x35fbc0]
10: /usr/bin/Xorg(InitOutput+0x9c5) [0x80a3eb5]
11: /usr/bin/Xorg(main+0x276) [0x8070546]
12: /lib/libc.so.6(__libc_start_main+0xdc) [0xb00e9c]
13: /usr/bin/Xorg(FontFileCompleteXLFD+0x1fd) [0x806fa51]

Fatal server error:
Caught signal 11.  Server aborting

Comment 7 Matěj Cepl 2010-07-23 16:54:37 UTC
(In reply to comment #4)
> Actually looks to be a duplicate of #521350, so close this one if desired.    

Yes, I think you are right. Closing as a duplicate.

*** This bug has been marked as a duplicate of bug 521350 ***

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