Multi-monitor configuration with different vertical resolution
| Affects | Status | Importance | Assigned to | Milestone | |
|---|---|---|---|---|---|
| Unity |
New
|
Undecided
|
Unassigned | ||
| unity (Ubuntu) |
New
|
Undecided
|
Unassigned | ||
Bug Description
I observe this bug for a long time in all versions of Ubuntu.
Bug is simple: ubuntu doesn't work correctly with 2 or more monitors that have different vertical resolution.
This bug starts at login screen, where monitors works as mirrors, and ends in Unity with different bugs with background, windows position and so on.
Now I'm using Ubuntu 13.04 and radeon driver.
I have 2 monitors with resolution 2560x1440, they are connected to 2 video cards (tried HD5450+HD5450 and HD6570+HD5450).
In this case configuration with two horizontal monitors works good enough, but when I rotate monitors - several bugs occurred at the same place:
1) It is not possible to rotate any monitor, that is connected to not primary video card (primary means installed in the first PCI-E slot), because xserver crashes, and I see login screen
2) If I rotate primary screen - I see large degradation in performance (comparing to horizontal position)
3) After reboot primary (rotated) monitor is cropped to height of horizontal monitor (and performance is the same as in horizontal position of both monitors), and only opening monitors settings window and applying current settings without any changes (after this desktop background is not displayed correctly [scale mode], but returns if choose any other displaying mode, and then switch to scale)
4) At login screen only primary monitor works and in default (unrotated) position
This all was tested on Ubuntu 13.04 and 13.10 with stock and compiled by myself kernels 3.8-3.10-rc3 and with different stock and testing versions of radeon driver, mesa, and other stuff from xorg-edgers.
Sorry if something is not understandable, I'm pretty sure all this is simply reproducible and can repeat any steps again with any necessary logs to solve this problem as fast as it is possible.
| summary: |
- Mupli-monitor configuration with different vertical resolution + Multi-monitor configuration with different vertical resolution |
| Martin Goth (i-ubuntuone-x) wrote | #1 |
Maybe this can split into several bug reports, since there could be several causes for the single points.
Personally I can confirm point 3). I will further explain the problem.
My setup is a one portrait monitor (1920x1080) and one landscape (1080x1920). My desktop background is 1920x1920 so in zoom & center setting both monitors are filled without the background being zoomed. However after relogin or reboot the secondary landscape monitor's background is either zoomed by 1.7x (1920/1080) or cropped to 1080x1080 leaving black bars left and right, whether the setting was zoom or center. Switching between zoom and center in the setting then returns the original mode.
Steps to reproduce:
1. Have two fullhd monitors, primary in portrait, other in landscape mode.
2. Set a 1920x1920 image as desktop background
3. Set center or zoom mode
4. Log out and log in again