Ubuntu

Choppy window movment on kubuntu with multi monitor setup

Asked by Christian Anke

Hi,

i have a multi monitor setup (card1: 2 monitors, card2: 1 monitor) on Kubuntu 14.04.
Both cards are:

01:00.0 VGA compatible controller: Advanced Micro Devices, Inc. [AMD/ATI] Cedar [Radeon HD 5000/6000/7350/8350 Series]
04:00.0 VGA compatible controller: Advanced Micro Devices, Inc. [AMD/ATI] Cedar [Radeon HD 5000/6000/7350/8350 Series]

Now, when i try to move a window it starts to get choppy when i do a fast move. Slow moves are ok.
I tried to do that w/o desktop effects, but this will only let the coppy movement appear later.

This behaviour occures with defautl 14.04 and with hardware enablement stack.

Is there something i have to do on this setup to get rid of that coppy movemnt?
Or maybe this is a bug?

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Revision history for this message
actionparsnip (andrew-woodhead666) said : 		#1

What is the output of:

sudo lshw -C display; lsb_release -a; uname -a

Thanks

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Christian Anke (c-anke) said : 		#2

"sudo lshw -C display; lsb_release -a; uname -a" outputs:

 *-display
       Beschreibung: VGA compatible controller
       Produkt: Cedar [Radeon HD 5000/6000/7350/8350 Series]
       Hersteller: Advanced Micro Devices, Inc. [AMD/ATI]
       Physische ID: 0
       Bus-Informationen: pci@0000:01:00.0
       Version: 00
       Breite: 64 bits
       Takt: 33MHz
       Fähigkeiten: pm pciexpress msi vga_controller bus_master cap_list rom
       Konfiguration: driver=radeon latency=0
       Ressourcen: irq:43 memory:e0000000-efffffff memory:f1520000-f153ffff ioport:4000(Größe=256) memory:f1500000-f151ffff
  *-display
       Beschreibung: VGA compatible controller
       Produkt: Cedar [Radeon HD 5000/6000/7350/8350 Series]
       Hersteller: Advanced Micro Devices, Inc. [AMD/ATI]
       Physische ID: 0
       Bus-Informationen: pci@0000:04:00.0
       Version: 00
       Breite: 64 bits
       Takt: 33MHz
       Fähigkeiten: pm pciexpress msi vga_controller bus_master cap_list rom
       Konfiguration: driver=radeon latency=0
       Ressourcen: irq:45 memory:d0000000-dfffffff memory:f1420000-f143ffff ioport:2000(Größe=256) memory:f1400000-f141ffff
No LSB modules are available.
Distributor ID: Ubuntu
Description: Ubuntu 14.04.2 LTS
Release: 14.04
Codename: trusty
Linux pcank 3.16.0-33-generic #44~14.04.1-Ubuntu SMP Fri Mar 13 10:33:29 UTC 2015 x86_64 x86_64 x86_64 GNU/Linux

Revision history for this message
actionparsnip (andrew-woodhead666) said : 		#3

Try installing the proprietary video driver using system settings -> additional drivers

Revision history for this message
Christian Anke (c-anke) said : 		#4

Tried fglrx-update (after fixing http://askubuntu.com/questions/595359/fglrx-wont-install-unable-to-correct-problems-you-have-held-broken-packages).

First thing: this driver is horror.
Second thing: the coppy window movement has been fixed.

Enabling the second device is not applicable by the amdccc. Had to run aticonfig --adapter=all --initial.
Then, to be able to move windows through all 3 screens, i have to enable xinerama. This disables ranr extension, so no
configuration of the screen positions after enabling xinerama is possible w/o disabling/fix positions/enabling/restart cycles until it fits my needs. Also desktop effects are disabled…

In short, this would fix the issue, but this driver is not an option.

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