ubuntu-x-swat team mailing list archive

[dvg <vangeet_dieter@xxxxxxxxxxx>]

Public bug reported:

After upgrading from Ubuntu 8.10 to 9.04, my rdesktops to Windows servers are unusable.
Screen refreshes inside rdesktop are awfully slow. Scrolling a logfile causes xorg to take 100% cpu.

I'm using Ubuntu 9.04 as default as possible, no xorg.conf editing or
other vga drivers.

I have a ThinkPad Z60m with an ATI x600 mobility:
root@tp:~# lspci |grep -i vga
01:00.0 VGA compatible controller: ATI Technologies Inc M24 1P [Radeon Mobility X600]


Very easy to reproduce with default settings:
- launch laptop from Ubuntu 9.04 live cd
- open rdesktop or tsclient to a Windows machine
- open a large logfile or a putty window
- watch how the screen in building up line per line, slowing down even more near the buttom of the screen


I tested other ThinkPads with other vga cards, they don't have this issue.
- Z61m with ATI x1400 = ok
- R61 with nVidia = ok


A few more observations:
- 2D and 3D in Ubuntu works fine with the new default driver (great job :-)
- Visual Effects (Compiz?) work fine, on 'normal' and even 'extra', but have no effect on the reported issue. I always disable the visial effects.
- scrolling in other applications works fine and fast (FF3, gedit, terminal,...)
- I use rdesktop in a windowed mode (1280x960), RDPv5
- I tried rdesktop bitmap caching enable/disable, same for both
- when I launch a Windows RDP inside my rdesktop, this 2nd RDP does NOT suffer the same problem

** Affects: xserver-xorg-video-ati (Ubuntu)
     Importance: Undecided
         Status: New

-- 
xorg 100% cpu when scrolling in rdesktop
https://bugs.launchpad.net/bugs/378958
You received this bug notification because you are a member of Ubuntu-X,
which is subscribed to xserver-xorg-video-ati in ubuntu.