Public bug reported:
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.
** Affects: unity (Ubuntu)
Importance: Undecided
Status: New
--
You received this bug notification because you are a member of Ubuntu
Bugs, which is subscribed to Ubuntu.
https://bugs.launchpad.net/bugs/1185784
Title:
Mupli-monitor configuration with different vertical resolution
To manage notifications about this bug go to:
https://bugs.launchpad.net/ubuntu/+source/unity/+bug/1185784/+subscriptions
--
ubuntu-bugs mailing list
ubuntu-bugs@lists.ubuntu.com
https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
