Bug 217352 - Switching virtual terminals breaks X on G965
Switching virtual terminals breaks X on G965
Product: Fedora
Classification: Fedora
Component: xorg-x11-drv-i810 (Show other bugs)
x86_64 Linux
medium Severity medium
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Assigned To: Adam Jackson
Depends On:
  Show dependency treegraph
Reported: 2006-11-27 07:19 EST by Markku Kolkka
Modified: 2007-11-30 17:11 EST (History)
3 users (show)

See Also:
Fixed In Version:
Doc Type: Bug Fix
Doc Text:
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Clone Of:
Last Closed: 2007-05-03 15:11:58 EDT
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Regression: ---
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oVirt Team: ---
RHEL 7.3 requirements from Atomic Host:
Cloudforms Team: ---

Attachments (Terms of Use)
X server config file (717 bytes, text/plain)
2006-12-29 06:46 EST, Markku Kolkka
no flags Details
X server log (126.34 KB, text/plain)
2006-12-29 06:47 EST, Markku Kolkka
no flags Details
X server log with hardware autodetection (99.11 KB, text/plain)
2006-12-29 06:48 EST, Markku Kolkka
no flags Details
Xorg.0.log with modesetting driver (99.89 KB, text/plain)
2007-02-20 17:15 EST, Peter Gordon
no flags Details

  None (edit)
Description Markku Kolkka 2006-11-27 07:19:40 EST
Description of problem:
Switching from X to a text-mode virtual terminal and back to VT7 results in a
blinking single-color screen on VT7. Re-starting X doesn't help, the only way to
restore normal X display is to reboot.

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

How reproducible:

Steps to Reproduce:
1. Ctrl-Alt-F1
2. Alt-F7
Actual results:
Blinking blank screen

Expected results:
Normal X user interface

Additional info:
Intel DG965WH motherboard, Core 2 Duo E6600 processor.
Comment 1 Markku Kolkka 2006-12-06 13:13:45 EST
Adding Option "VBERestore" "true" to xorg.conf seems to fix the problem.
Comment 2 Mihai Harpau 2006-12-28 13:47:14 EST
I have the same behavior with Intel DG965SS motherboard and Pentium D 2.8 Ghz.
The tip from comment #1 does not work in my case.
Comment 3 Matěj Cepl 2006-12-29 03:46:13 EST
Thanks for the bug report and sorry for so late reply to it.

Please attach your X server config file (/etc/X11/xorg.conf) and X server log
file (/var/log/Xorg.*.log) to the bug report as individual uncompressed file
attachments using the bugzilla file attachment link below.

Could you please also try to run without any /etc/X11/xorg.conf whatsoever and
let X11 autodetect your display and video card? Attach to this bug
/var/log/Xorg.0.log from this attempt as well, please.

We will review this issue again once you've had a chance to attach this information.

Thanks in advance.
Comment 4 Markku Kolkka 2006-12-29 06:46:26 EST
Created attachment 144533 [details]
X server config file
Comment 5 Markku Kolkka 2006-12-29 06:47:15 EST
Created attachment 144534 [details]
X server log
Comment 6 Markku Kolkka 2006-12-29 06:48:05 EST
Created attachment 144535 [details]
X server log with hardware autodetection
Comment 7 Ilya Ryabinkin 2007-02-20 09:51:00 EST
I confirm the bug. Flickering screen results, when one switch to console and
back. "VBERestore" option does not help

00:02.0 VGA compatible controller: Intel Corporation 82946GZ/GL Integrated
Graphics Controller (rev 02) (prog-if 00 [VGA])
        Subsystem: Intel Corporation Unknown device 5354
        Flags: bus master, fast devsel, latency 0, IRQ 11
        Memory at 50100000 (32-bit, non-prefetchable) [size=1M]
        Memory at 40000000 (64-bit, prefetchable) [size=256M]
        I/O ports at 20e0 [size=8]
        Capabilities: <access denied>
Comment 8 Ilya Ryabinkin 2007-02-20 09:54:38 EST
Driver info:

$ uname -a
Linux node7 2.6.18-1.2798.fc6 #1 SMP Mon Oct 16 14:37:32 EDT 2006 i686 i686 i386

Intel motherboard with integrated graphics, Core 2 Duo E4300
Comment 9 Peter Gordon 2007-02-20 17:15:52 EST
Created attachment 148450 [details]
Xorg.0.log with modesetting driver

I've played around with it a bit, and the modesetting driver branch ("intel"
instead of i810) successfully resets the display and works well when switching
bewteen VTs and the X session. This is with xorg-x11-drv-i810-1.6.5-11.fc7
(x86_64). Attached is my Xorg.0.log file with this driver instead of i810.
Comment 10 Adam Jackson 2007-05-03 15:11:58 EDT
intel driver is the default now for 965 hardware, so marking this one as fixed
in rawhide.

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