kscreen reports wrong screen resolution

[Friedemann Schorer]

After upgrading from 14.10 to 15.04 beta2 yesterday my laptop works with the wrong resolution, and I can't fix that via systemssettings.

Issueing 'kscreenconsole' produces the following output:

START: Requesting Config
kscreen: launcherDataAvailable: "org.kde.KScreen.Backend.XRandR"
Received config. Took 50 milliseconds
Screen:
        maxSize: QSize(1024, 768)
        minSize: QSize(1024, 768)
        currentSize: QSize(1024, 768)

-----------------------------------------------------

Id: 380
Name: "default"
Type: "Unknown"
Connected: true
Enabled: true
Primary: true
Rotation: 1
Pos: QPoint(0,0)
MMSize: QSize(0, 0)
Size: QSize(1024, 768)
Clones: None
Mode: "381"
Preferred Mode: "381"
Preferred modes: ()
Modes:
         "381" "1024x768" QSize(1024, 768) 76
EDID Info:
        Unavailable

The actual resolution is 1366x768px - which was detected correctly in Kubuntu 14.10

[Launchpad Janitor (janitor)]

Status changed to 'Confirmed' because the bug affects multiple users.

[Sandman (tony-cromarty)]

I upgraded to 15.04 and all worked fine, After a couple of days I had a jumpy screen so I restarted. Since then I have the wrong screen resolution and cannot change it.

I have two kscreen config files under ~/.local/share/kscreen - the older one has the correct resolution settings with the id 'LVDS'. The newer file has the wrong resolution setting with an id of 'default'. I am unable to get kscreen to use the older file.

Under System Settings -> Display Configuration there is only the default monitor/screen which does not allow resolution changes. There is no option of creating a new monitor/screen or selecting the older config file 'LVDS'.

My graphics card is Mobility Radeon HD5650 and I am using the x-server-xorg-video-ati recommended driver

[Sandman (tony-cromarty)]

I have switched to the AMD drivers from fglrx and I can now change my screen resolution.

This suggests an issue with the xorg-video-ati driver.

[Scarlett Gately Moore (scarlettmoore)]

This bug is very old, if it is still an issue please update the bug with information from a supported release.

[Launchpad Janitor (janitor)]

[Expired for kscreen (Ubuntu) because there has been no activity for 60 days.]