Not possible to choose selected panel resolution

Bug #113514 reported by Irios
22
Affects Status Importance Assigned to Milestone
displayconfig-gtk (Ubuntu)
Incomplete
High
Unassigned

Bug Description

If in the hardware tab I choose "Flat Panel 1280x768", then the 1280x768 option does not appear in the resolutions pop-up list in the System Defaults tab.

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sonal (bruno-mangin) wrote :

hello

I think so and i confirm.

I have the same problem with "Flat Panel 1440x900" that doesn't enable to choose the 1440x900 resolution

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Sebastian Heinlein (glatzor) wrote :

could you please append your xorg.conf and the pcitables.txt that can be created by running the following command:

displayconfig-gtk -w pcitable.txt

Cheers,

Sebastian

Changed in displayconfig-gtk:
status: New → Incomplete
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Andrew Fuchs (fuchs.andy) wrote :

The same happens, with "LCD Panel 1280x800" (widescreen, common on newer laptops).

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Bryce Harrington (bryce) wrote :

I see the same behavior; occasionally the resolutions for a given flat panel do not show the full available set of resolutions. Other times it does.

Changed in displayconfig-gtk:
importance: Undecided → High
status: Incomplete → Triaged
Revision history for this message
sonal (bruno-mangin) wrote :

hello

for me the problem was solved with the 2007-07-31 release of displayconfig-gtk (gutsy) but i noticed it only yesterday

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christoph sturm (christoph-sturm) wrote :

I am seeing this problem with an imac 24" with a built in 1920x1200 display and an additional 1920x1200 Apple 23" Cinema display. I have set both displays to generic 1920x1200 panel, and it only offers 1920x1440 and other standard resolutions. attached is pcitable.txt.

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christoph sturm (christoph-sturm) wrote :

the xorg.conf file.

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davie (daviemoston) wrote :

I see the same problem with LCD panel 1440 x 900 - it has a variety of resolutions both higher and lower, but not 1440x900.

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Stéphane Ludwig (sludwig) wrote :

Same problem here on a a MacBook.

1st display: 1280x800, work perfectly with the 'intel' driver.
2nd display: should be 1680x1050 but is cloned (and resolution is 1280x800 too) from the first display.

If I try to "activate" it with displayconfig-gtk, the first screen is desactivated and the second screen start to flicker and is unreadable...

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Sebastian Heinlein (glatzor) wrote :

This is caused by a wrong/missing detection of the aspect ratio.

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Sebastian Heinlein (glatzor) wrote :

This should be fixed with the next kde-guidance release. It seems that the generic monitor definitions contained some mistakes. Furthermore displayconfig-gtk does not allow to select a resolution that is not supported by the currently attached screen.

Changed in displayconfig-gtk:
status: Triaged → Fix Committed
Revision history for this message
stbaker (sean-t-baker) wrote :

Are the changes to the monitor definitions going to be applied to displayconfig-gtk as well, or just kde-guidance? I'm seeing the same problem in Gnome; 1440x900 isn't listed in the available modes for the generic 1440x900 LCD model provided. Alternatively, how can I define my own monitor models?

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Dennis Schmitz (deezid) wrote :

I have the same problem with displayconfig-gtk.
This problem still exists here (will try the updates from today in a few minutes and report).

NVIDIA Geforce7900
nv driver
1440x900 (DVI)

regards Dennis

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Dennis Schmitz (deezid) wrote :

It still doesn't work with the latest updates!
xorg.conf says 1440x1440 which is totally wrong.
xrandr reports 1152x864 as the highest supported resolution so does displayconfig-gtk.
If I select 'LCD Panel 1440x900' in displayconfig-gtk 1024x768 is the highest possible resolution to choose...

regards Dennis

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Sebastian Heinlein (glatzor) wrote :

Please append the output of the following commands:

sudo get-edid | parse-edid

and

sudo /usr/bin/ddcprobe

Thanks

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Dennis Schmitz (deezid) wrote :

Here they are

regards Dennis

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Gauthic (gauthic) wrote :

Having a similar issue: Acer 8200, Radeon 1600 with built in Samsung display

Attached is the results of my ddcprobe

Dennis Schmitz (deezid)
Changed in displayconfig-gtk:
status: Fix Committed → Incomplete
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glen (webplate) wrote :

Same troubles on a Dell 6400

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Stéphane Ludwig (sludwig) wrote :

Here is the output of ddcprobe on my MacBook. Now the size is correctly detected and set but it is impossible to choose the screen as secondary monitor...and if if I choose it as primary monitor the X server does not start...

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Stéphane Ludwig (sludwig) wrote :
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Sebastian Heinlein (glatzor) wrote :

the intel and ati driver do no longer support xinerama which is used by displayconfig-gtk to create a dualhead setup.

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TRiSS (triss) wrote :

just an observation of mine:

the problem with missing widescreen resolutions might be solved by ticking "widescreen" in the window where you select your display model(eg generic panel....)... Ticking this box makes the widescreen resolutions show up...

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Neil Woolford (neil-neilwoolford) wrote :

I'm also having similar trouble.

What I'm trying to do is to set up the internal panel of my laptop as the default (primary) display at its native 1280 by 800 (widescreen) and the external display connector to 1024 by 768, the native resolution of the projector I wish to use with it. The secondary (external) display is mirroring the main display. (Previously I have set the laptop to 1024 by 768 when I wish to use the external connector to drive the projector, which has worked well for the projector but leaves me with a smeary display at non-native resolution on the laptop).

My experience so far with displayconfig-gtk is that I *can* achieve this setup, but only after going through the process several times, experiencing mysteries such as changed stated resolution of the main (laptop) display when I make any change to the secondary (external) display. Sometimes displayconfig-gtk exits without doing anything after settings have been changed. Sometimes the internal display gets changed to a non-native (lower) resolution, sometimes not.

Even when a satisfactory output is achieved, with both displays running at the resolutions I want, I find I can break it by using the function keys (fn F7) to cycle between internal only, external only and both displays.

I'm using a Lenovo 3000 N100 with Intel 945 integrated graphics using the i810 driver according to my xorg.conf

I'm happy to work more on this in response to specific developer questions; at the moment I'd not want to set up an external projector in front of an audience...

Revision history for this message
Neil Woolford (neil-neilwoolford) wrote :

Checking things out further, I have to add that of course Gutsy's OpenOffice Impress is a version that now supports multiple displays for presentations and it is actually better to using an extended display over two monitors (one the internal panel, the other the projector); OpenOffice Impress now detects the two available screens and give the choice in Slide Show Settings of displaying on Monitor 1 (primary), Monitor 2 (the external display) or Both.

Thus it is now better to use and Extended Default Screen on the second monitor and take advantage of the new feature in Impress rather than clone the internal display.

I have to say that using displayconfig-gtk to change to this worked first time for my system and the fn F7 toggling of displays on and off now works perfectly for me too.

I'll leave well alone for now!

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