Red Hat Bugzilla – Bug 212762
My monitor type was not detected
Last modified: 2018-04-11 08:30:39 EDT
Description of problem:
After having installed FC6 I noticed my screen resolution was limited to
800x600. I had to manually go into the display config and set my monitor to NEC
Multisync LCD2010X and then I could change the resolution to 1280x1024. The
monitor is connected to a Radeon 9200 which was properly detected.
Version-Release number of selected component (if applicable):
It happened during both practice installs I made. These were fresh installs into
Steps to Reproduce:
A generic monitor type was used that didn't match my actual monitor very well.
Proper detection of the monitor.
anaconda's just relying on whatever X tells us about the monitor these days.
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 151427 [details]
This is one from an F7 snapshot install. The snapshot was from last Friday.
After doing the install, I manually changed the monitor type and that is what
is reflected in this file.
Created attachment 151430 [details]
This is again from a F7 install.
Created attachment 151431 [details]
Since there was a .old file there as well, I thought it would be useful to
When I did the f7 install, I don't remember anaconda saying anything about my
monitor, though there was a message about the video card. When I tested f7, it
came up in 800x600. I don't remember exactly what the monitor name was. I then
changed it to the 2010x entry and my display changed to 1920x1280 (after logging
out and back in), which seemed odd, since that isn't a native resolution for the
monitor and isn't even the correct aspect ratio. I then changed it to use
1280x1024 and things looked normal.
I removed the xorg.conf file from my f7 installation and booted into it. The
display resolution went back to 800x600. I checked the hardware type of the
monitor and it said "autoconfigured". I didn't retest, this, but my memory is
that I couldn't increase the resolution until after I changed the monitor type.
I'll be attaching the regenerated conf and log files shortly.
Created attachment 151433 [details]
This is the Xorg.0.log from after having removed the xorg.conf file and
rebooting into f7.
There was no etc/X11/xorg.conf created after removing it rebooting into f7,
logging in and rebooting back to fc5 (the f7 instance isn't set up to use my
That's correct -- it was my mistake -- autoconfiguration of Xorg doesn't produce
/etc/X11/xorg.conf, only depreceated system-config-display does (because whole
idea of autoconfiguration is that /etc/X11/xorg.conf should be unnecessary).
*** This bug has been marked as a duplicate of 231359 ***