Red Hat Bugzilla – Bug 212729
External VGA port does not work (i810 driver)
Last modified: 2007-11-30 17:11:46 EST
Description of problem:
Install FC6 on an thinkpad x60 (Intel 945 graphics, 1024x768 LCD)
Plug a projector into the external VGA and nothing happens (even
when explicitly pressing fn-F7)
Version-Release number of selected component (if applicable):
Steps to Reproduce:
should be able to use external VGA
two modifications to my xorg.conf are needed to get it to work:
modify the "Device" section to look like:
Option "MonitorLayout" "CRT,LFP"
Option "DevicePresence" "true"
# Option "CheckLid" "false"
Option "Clone" "true"
VendorName "Videocard vendor"
BoardName "Intel Corporation Mobile Integrated Graphics Controller"
(here, I've added the MonitorLayout, DevicePresence, and Clone lines)
Also, I needed to comment out the HorizSync and VertSync values to get
the refresh rate down from 85 Hz to 60 Hz.
Now, when I plug a projector in, the external display just works. No key
combination necessary -- it appears on the laptop display and external display
Can't this port be enabled by default when the xorg.conf is written?
Or perhaps system-config-display can have some option to allow for this to be
Thanks for the bug report and sorry for answering to your report so late, but
hopefully we will get faster turnover now.
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 144648 [details]
Xorg log file when using xorg.conf
Created attachment 144649 [details]
Created attachment 144656 [details]
Xorg log file when NOT using xorg.conf
Attached is the xorg.conf and the Xorg.0.log file resulting from running with
that. I've also attached the Xorg.0.log file from when I run w/o any xorg.conf
-- as requested.
In this latter case (no xorg.conf file), my external VGA port does not work and
the display appears to look a bit worse (some flickering).
When I restore the xorg.conf, things look good and a projector plugged into the
external VGA port works automatically (no keypress required), displaying on the
laptop screen and through the projector simultaneously.
As of xorg-x11-drv-i810-1.6.5-19.fc7, 915GM and all 945 and 965 chips will use
the intel modesetting driver by default. Please update, and test with that
driver, and reopen if you have further issues.