Bug 121946 - system-config-display: can only access 800x600 and 640x480 screen resolutions
Summary: system-config-display: can only access 800x600 and 640x480 screen resolutions
Status: CLOSED DUPLICATE of bug 120950
Alias: None
Product: Fedora
Classification: Fedora
Component: xorg-x11
Version: rawhide
Hardware: i686
OS: Linux
Target Milestone: ---
Assignee: Mike A. Harris
QA Contact:
Depends On:
TreeView+ depends on / blocked
Reported: 2004-04-29 09:20 UTC by Michael Opdenacker
Modified: 2007-11-30 22:10 UTC (History)
2 users (show)

Fixed In Version:
Doc Type: Bug Fix
Doc Text:
Clone Of:
Last Closed: 2006-02-21 19:02:51 UTC
Type: ---

Attachments (Terms of Use)
My last xorg.0.log (30.66 KB, text/plain)
2004-05-02 12:54 UTC, Mike Becker
no flags Details

Description Michael Opdenacker 2004-04-29 09:20:22 UTC
From Bugzilla Helper:
User-Agent: Mozilla/5.0 (X11; U; Linux i686; en-US; rv:1.6) Gecko/20040422

Description of problem:

This is an issue that was introduced in FC2 T3.
I didn't face it in FC2 T1 and T2.

I have a 1600x1200 LCD Panel
and a ATI Radeon Mobility M9 (9000) video card.

I have no display problem at all: the screen resolution
is 1600x1200 as it should be.

The only problem is that system-config-display
("System Settings" -> "Display") only lets
me choose between the 800x600 and 640x480 resolutions.

This can confuse users when system-config-display
is run during the first boot.

Here are the corresponding sections in my /etc/X11/XF86Config file:

Section "Device"
        Identifier  "Videocard0"
        Driver      "radeon"
        VendorName  "Videocard vendor"
        BoardName   "ATI Radeon Mobility M9"
Section "Screen"
        Identifier "Screen0"
        Device     "Videocard0"
        Monitor    "Monitor0"
        DefaultDepth     24
        SubSection "Display"
                Viewport   0 0
                Depth     16
                Modes    "1600x1200" "1400x1050" "1280x1024"
"1280x960" "1024x768" "800x600" "640x480"
        SubSection "Display"
                Viewport   0 0
                Depth     24
                Modes    "800x600" "640x480"

Don't hesitate to ask me for more details!
Thank you for everything!



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

How reproducible:

Steps to Reproduce:
1. Run system-config-display

Additional info:

Comment 1 Michael Opdenacker 2004-04-29 09:28:16 UTC
I removed the below subsection:

        SubSection "Display"
                Viewport   0 0
                Depth     24
                Modes    "800x600" "640x480"

... and restarted the X server.
This didn't have any impact on the behaviour of

Comment 2 Nils Hammar 2004-04-30 20:24:15 UTC
I experienced the same problem on a machine with an Intel I810
graphics card and a HP A4033A 21" monitor capable of 1600x1200.

Comment 3 Mike Becker 2004-05-02 12:53:04 UTC
Basically the same here on this Gateway M500 but xorg sets the res to
1024x768 instead of the 1280x854 the system uses.  I added the
ModeLine to xorg.conf, it did work on the initial X startup but fails
to use 1280x854 on subsequent starts.

My xorg.conf (partial):

Section "Monitor"
	Identifier   "Monitor0"
	VendorName   "Monitor Vendor"
	ModelName    "LCD Panel 1280x854"
	HorizSync    31.5 - 48.5
	VertRefresh  40.0 - 60.0
	Option	     "dpms"
	ModeLine     "1280x854" 85.26 1280 1296 1552 1792 854 854 861 892

Section "Device"
	Identifier  "Videocard0"
	Driver      "nv"
	VendorName  "Videocard vendor"
	BoardName   "NVIDIA GeForce 4 (generic)"

Section "Screen"
	Identifier "Screen0"
	Device     "Videocard0"
	Monitor    "Monitor0"
	DefaultDepth     16
	SubSection "Display"
		Viewport   0 0
		Depth     16
		Modes    "1280X854" "1024x768" "800x600" "640x480"

I have used these parameters since FC1 with success...

Comment 4 Mike Becker 2004-05-02 12:54:02 UTC
Created attachment 99881 [details]
My last xorg.0.log

Comment 5 Mike Becker 2004-05-03 14:48:52 UTC
OK guys, for some reason I was able to get the 1280x854 screen
resolution simply by adding one '#' to the SubSection/Modes line, as in:

Section "Screen"
	Identifier "Screen0"
	Device     "Videocard0"
	Monitor    "Monitor0"
	DefaultDepth     16
	SubSection "Display"
		Viewport   0 0
		Depth     16
		Modes    "1280X854" #"1024x768" "800x600" "640x480"

Upon the next reboot, I had a 1280x854 screeen resolution!!!  This
will give me but one screen resolution but one is all I need.

Now if only I could get my Gnome system sounds to work...

Thanks guys...

Comment 6 Doug Morton 2004-05-05 03:28:04 UTC
This may seem a little "simple-minded", but I found that I cound get 
around this problem with the following procedure:

1. Select "system settings" and then "display"
2. Then I changed my monitor to some other monitor, clicked "OK"
3. Then immediately change the monitor back and click "OK". 

This refreshes the display resolution list, allowing selection of the 
correct resolution. A quick reboot and I had the resolution I wanted).

Comment 7 Nicholas Ruddick 2004-05-05 17:28:08 UTC
I have a similar problem with an Optiquest Q41 monitor.
System-display-settings lets me choose 640x480, 800x600, 1024x768.
However it will only boot up on 640x480 no matter what setting I
choose. This is reflected in the Gnome settings for screeen resolution
that only lets me choose 640x480.

Comment 8 Tim Mortlock 2004-05-05 23:21:47 UTC
Same for me runnig an Athlon XP1700+ with a Radeon 7500... Looks like 
I'm gonna have to play...


Comment 9 Mike A. Harris 2004-05-06 02:54:44 UTC

Please update your system to all of the latest packages from rawhide,
and then remove the XF86Config file or rename it to something else
as a backup.  After that, rerun "system-config-display --reconfig"
which will generate a new config file from scratch.  Try this config
out, and if the problem persists, edit the config file, which should
be /etc/X11/xorg.conf and go to the monitor section.  If the monitor
section contains commented out stuff, uncomment it and restart X and
see if that makes a difference.  Then attach your current xorg.conf,
and the X server log file to the report using the file attachment
below, and we can troubleshoot further.


Your problem is possibly the same, but may be a different problem
also.  The Intel i810 video driver is strictly limited to using
the video modes built into the VESA BIOS, which on many systems
restricts the available modes considerably.  In many cases for
example, there are laptop displays which are 1400x1050 native
resolution, but the BIOS on board does not support 1400x1050, so
Linux users are stuck using a non-native resolution, or using a
stretched display.  This is a limitation in the video BIOS which
is unavoidable on many laptop LCD panels, and also on DFP displays
connected to Intel video hardware.  If you're using a CRT, the
video mode limitation also applies, however you won't see a stretched

Others who are experiencing problems should try the advice I've
provided to Michael above also.  Your problems may be the same issue,
or may be completely different issues with similar symptoms.

Thanks in advance for your testing.  I'll re-review this report
in the future once the requested files have been attached, and
troubleshoot further.

Comment 10 Mike A. Harris 2004-05-06 02:58:32 UTC
This report and/or one of the other problems reported above, may
be a duplicate of bug #120950.  You may wish to review that report
for comparison/troubleshooting, etc.  Please indicate if you think
it is the same as the issue you're experiencing.

Thanks in advance.

Comment 11 Michael Opdenacker 2004-05-06 14:01:25 UTC
Hi Mike,

I followed your guidelines: upgraded to all available updates
and moved away the /etc/X11/XF86Config file.

However, I couldn't run the below command:

> system-config-display --reconfig
Traceback (most recent call last):
  File "/usr/share/system-config-display/xconf.py", line 412, in ?
NameError: name 'hardware_state' is not defined

So, I just ran:

> system-config-display
* ddcprobe returned bogus values:
ID:   None
Name: None
HorizSync: None
VertSync:  None
Trying with card: ATI Radeon Mobility M9

Still had only access to 640x480 (default) and 800x600.

I got the below /etc/X11/xorg.conf file:

I uncommented stuff in the Monitor section as you suggested and got:

Then I restarted X and end up with a 640x480 resolution.

Here's the X log file in /var/log before
and after restarting X

Fortunately, when I ran system-config-display then,
I could select the 1600x1200 resolution.
Here's the X config file that I got:


... and the X log file after restarting X and getting back to
the correct resolution:

Then, I reran system-config-display and once more
got stuck with only the 640x480 and 800x600 choices.

Sorry for just reporting raw data to you and not really
investigating... I'm pretty busy with other things at the moment.

If you have a fix for the "--reconfig" option, I'll be glad
to try again!

Thanks for everything!



Comment 12 Mike A. Harris 2004-05-07 13:43:27 UTC

*** This bug has been marked as a duplicate of 120950 ***

Comment 13 Michael Opdenacker 2004-05-25 08:32:41 UTC
Confirming that this issue no longer happens to me
in FC2 final.

Thanks for everything!



Comment 14 Red Hat Bugzilla 2006-02-21 19:02:51 UTC
Changed to 'CLOSED' state since 'RESOLVED' has been deprecated.

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