Red Hat Bugzilla – Bug 238329
[Regression] text modes broken when switching from X
Last modified: 2018-04-11 13:27:49 EDT
Description of problem:
After upgrading to F7test4 from FC6 virtual terminals became unusable. You get
corrupted video output when switching from X11.
Version-Release number of selected component (if applicable):
Steps to Reproduce:
1. Boot up maschine to runlevel 5 -> X is on vt7
2. login to X
3. switch between vt7 <-> vt1 -> everything OK
4. logout from X -> X restarts on vt9, 11 (seems to vary)
5. switch between vtX <-> vt1
corrupted video, virtual terminals are unusable.
working text modes
HW: Mitac 8375 laptop with 1400x1050 LCD panel
kernel option: vga=827 for 1400x1050 fb (doesn't really matter, normal VGA is
lspci: 01:00.0 VGA compatible controller: S3 Inc. VT8375 [ProSavage8 KM266/KL266]
The same for an IBM ThinkPad T23. Using the VESA framebuffer does not bring
any improvement either. In general, after switching more than once to a VT1
and back, then switching to VT1 leaves one with a monitor going to standby
mode. At this point, it also impossible to switch back to VT7.
At least, ctrl-alt-del allows to reboot the machine gracefully. However,
I do not see a regression. Savage VT switching has always been like that for
Thanks for the bug report. We have reviewed the information you have provided
above, and there is some additional information we require that will be helpful
in our diagnosis of this issue.
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.
Created attachment 155125 [details]
X server configuration for savage with 1400x1050 LCD
Created attachment 155126 [details]
X server logfile with xorg.conf
Created attachment 155128 [details]
X server logfile without xorg.conf (fails to start!)
X server fails to start without xorg.conf on my system, because it selects
framebuffer device instead of the savage device.
All 3 files are now attached as requested.
All 3 files are now attached as requested. (Hope it goes to ASSIGNED state now...)
Created attachment 155147 [details]
X server logfile with xorg.conf and VT switch
Sorry, late at night, forgot to also attach a X server log with an VT switch
that shows the problem. I don't see any error/problem messages there though...
Just updated to F8: problem is gone.
FYI: Was probably fixed by this commit included in 2.1.3 release: