xrandr+KDE4+desktop-effects: changing orientation with nvidia drivers fails to update desktop size

[H.i.M]

DISTRIB_ID=Ubuntu
DISTRIB_RELEASE=8.04
DISTRIB_CODENAME=hardy
DISTRIB_DESCRIPTION="Ubuntu hardy (development branch)"
KDE4.0.2 ( kwin-kde4 *** 4:4.0.2-0ubuntu2 0 )
Nvidia Geforce Ti 4200 128mb, nvidia-glx 96.43.05

When rotating screen via KRandRTray (xrandr) the new desktop size is incorrect.
!Appears only when desktop-effects are enabled.

Maybe comparable with bug 14994

[H.i.M (hir-i-mogul-gmail)]

I have chosen the metapackage, because i do not exactly know if kwin-kde4 4:4.0.2-0ubuntu2 or kdebase-workspace 4:4.0.2-0ubuntu2 is responsible for this bug.

[Maarten Fonville (maarten-fonville)]

I can confirm this bug.

(I have a dualscreen setup (nvidia Twinview) and run Hardy)

[Maarten Fonville (maarten-fonville)]

Hmm, actually my bug also appears when the desktop-effects aren't enabled. A strange thing is that I can use my full desktop, but plasma doesn't draw it correctly (it still thinks of the 'old' witdth)

[Maarten Fonville (maarten-fonville)]

I found a workaround for my problem that shows that the problem is really within updating the internal values of plasma: if you kill plasma and restart it, the desktop looks OK (even with desktop-effects turned on)

[Harald Sitter (apachelogger)]

Does this still happen in KDE 4.1?

[SorryGoFish (geoff-oxholm)]

I am running 4.1 and have the same issue. I have the issue also when enabling a 2nd monitor using xrandr. KWin crashes every time I enable the 2nd monitor.

[Logan Lewis (lkubuntu)]

I'm not sure if the kwin crash while enabling a second monitor is related to the original problem. Nonetheless, I can confirm it with Kubuntu 8.10 using the intel driver on a 965GM (X3100) graphics chip. My workaround is to kill plasma first, do the xrandr commands, and reload plasma. If you do this then kwin won't crash during the transition. Since I have this mapped to a keyboard shortcut, it's less annoying than it could be.

There are certainly other plasma bugs with xrandr: the background and plasmoids aren't drawn on my internal LCD when an external monitor gets enabled. I can create a new panel and move it over, though.

[Jonathan Thomas (echidnaman)]

Does the desktop update properly in Intrepid?

[H.i.M (hir-i-mogul-gmail)]

Kubuntu 8.10 KDE4.1.3
Radeon-Driver with x1900xtx
Kwin-Composite enabled

Iam able to change the Orientation in the right way now.
All things are working, except:

1. The Desktop size (Plasma) is now big enough (in comparison to the "screen rotated"-picture at 2008-03-12), but its even bigger. I made a picture to show it clearer: What you see on your screen is: normal screen: lila+turquoise, rotated screen lila+red.
But after rotating the screen the real workspace is as big as all colours together . The mouse disappears when you move it to right screen in "rotaded mode".

2. When you try to [alt]+[tab] (Cover flip) Kwin crashes and restarts new.

[H.i.M (hir-i-mogul-gmail)]

The rotated mode looks good. (1)

[H.i.M (hir-i-mogul-gmail)]

But when i switch my nine desktops. youll see black stripes on the rigt side of each desktop.
This is the too big "workspace" (i dont know how to describe else).
(2:9-desktops)

[H.i.M (hir-i-mogul-gmail)]

it has to look like this (3:9-desktops), but rotated

[Jonathan Thomas (echidnaman)]

Should be working in KDE 4.2. (Packages are available for Jaunty and Intrepid)