[X700] External monitor resolution can't be changed on laptop (ati driver)
Affects | Status | Importance | Assigned to | Milestone | |
---|---|---|---|---|---|
xserver-xorg-driver-ati |
Fix Released
|
Medium
|
|||
xrandr (Ubuntu) |
Invalid
|
Undecided
|
Unassigned | ||
xserver-xorg-video-ati (Ubuntu) |
Fix Released
|
Medium
|
Unassigned |
Bug Description
Binary package hint: xrandr
I have an Acer Laptop with the Graphic Card ATI Mobilty Radeon X700 running Hardy. I use the open source ati driver. When I plug in an external monitor in the VGA output of my laptop, xrandr recognises it but can't set its resolution. After activating the VGA-output using the shortcut Fn+F5, xrandr sees the following:
VGA-0 connected 1280x800+0+0 (normal left inverted right x axis y axis) 0mm x 0mm
1280x1024 59.9
1280x800 59.8* 60.0
1280x768 60.0
1024x768 60.0 59.9
800x600 60.3 59.9
640x480 59.9 59.4
LVDS connected 1280x800+0+0 (normal left inverted right x axis y axis) 0mm x 0mm
1280x800 60.0*+ 60.0
1280x768 60.0
1024x768 60.0 59.9
800x600 60.3 59.9
640x480 59.9 59.4
S-video disconnected (normal left inverted right x axis y axis)
DVI-0 disconnected (normal left inverted right x axis y axis)
The external display seems to have indeed the same resolution like the LCD (1280x800) but two stripes on the left and right side of the desktop are croped.
According to xrandr documentation I should be able to define the resolution of the external monitor independantly from the resolution of the LCD. Running
xrandr --output VGA-0 --mode 800x600
indeed moves the * in the VGA-0 segmend of xrandr output from the 2nd to the 5th row, but unfortunately this has no impact on the appearance of the external display.
Modifying the resolution of the LCD itself (e.g. xrandr --output LVDS --mode 800x600) has an impact also on the appearance of the external display. The left and right ends of the desktop on are still croped on the external display.
I have repeated all these tests using the gui gnome-display-
libxrandr2 version: 2:1.2.2-1
Related branches
Changed in xserver-xorg-video-ati: | |
importance: | Undecided → Medium |
status: | Incomplete → Triaged |
Changed in xserver-xorg-video-ati: | |
status: | Incomplete → Confirmed |
Changed in xserver-xorg-video-ati: | |
status: | Fix Released → Confirmed |
Changed in xserver-xorg-driver-ati: | |
status: | Unknown → Confirmed |
Changed in xserver-xorg-video-ati: | |
status: | Incomplete → Confirmed |
status: | Confirmed → Incomplete |
Changed in xserver-xorg-video-ati: | |
status: | Incomplete → New |
Changed in xserver-xorg-video-ati: | |
status: | Incomplete → Confirmed |
Changed in xserver-xorg-video-ati: | |
status: | Incomplete → Triaged |
summary: |
- [Mobility X700] External monitor resolution can't be changed on laptop - (ati driver) + [X700] External monitor resolution can't be changed on laptop (ati + driver) |
tags: | added: resolution |
tags: | added: dual-head |
tags: | added: hardy |
Changed in xserver-xorg-driver-ati: | |
importance: | Unknown → Medium |
Changed in xserver-xorg-driver-ati: | |
importance: | Medium → Unknown |
status: | Confirmed → Fix Released |
Changed in xserver-xorg-driver-ati: | |
importance: | Unknown → Medium |
Please attach your /var/log/ Xorg.0. log.