Unity launcher leaves a trace when autohide is enabled (using llvmpipe acceleration)

Asked by Pablo Zubieta on 2012-11-07

I am using Ubuntu 12.10 and when I change the Unity Launcher mode to autohide, a trace is leaved in the place of the launcher.

A screenshot of the problem can be seen here:

I have no graphics card and I am using llvmpipe acceleration. I don't know if it is a bug on unity or llvmpipe (or if it has to do with the fact that the low graphics mode is enabled by default when using llvmpipe).

Is there a way to solve this?

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If you don't have a graphics card, how are you getting the display to the screen?

Pablo Zubieta (pabloferz+) said : #2

I have a Radeon graphics card but it's not working well (physically). I installed Ubuntu and had to uninstall the ati driver so my system is using the mesa driver and llvmpipe for graphics acceleration.

Can you give the output of:

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


Pablo Zubieta (pabloferz+) said : #4

Here it is:

       description: VGA compatible controller
       product: RS780M/RS780MN [Mobility Radeon HD 3200 Graphics]
       vendor: Advanced Micro Devices [AMD] nee ATI
       physical id: 5
       bus info: pci@0000:01:05.0
       version: 00
       width: 32 bits
       clock: 33MHz
       capabilities: pm msi vga_controller bus_master cap_list rom
       configuration: driver=radeon latency=0
       resources: irq:18 memory:d0000000-dfffffff ioport:9000(size=256) memory:cfdf0000-cfdfffff memory:cfe00000-cfefffff
No LSB modules are available.
Distributor ID: Ubuntu
Description: Ubuntu 12.10
Release: 12.10
Codename: quantal
Linux pabloferz 3.5.0-18-generic #29-Ubuntu SMP Fri Oct 19 10:26:51 UTC 2012 x86_64 x86_64 x86_64 GNU/Linux

Pablo Zubieta (pabloferz+) said : #6

I had Ubuntu 12.04 working fine with the Catalyst driver, sudenly my laptop stoped turnning on because my graphics card had a welding defect. I tried to fix it and my laptop was turning on again, but it failed to render through the graphics card, cause I messed it up. Anyway, I uninstalled the Catalyst driver and the xserver-xorg-video-ati driver and Unity-2D was working fine.

I upgraded to Ubuntu 12.10 and again the graphics card wasn't working so I uninstaled the ati driver, so I was able to use the mesa driver and graphics acceleration through llvmpipe. I don't think installing the propietary driver again would help me. (I might try again to install the Catalyst driver, but I'm sure mine it's a hardware problem.)

Later I found this question, asked by someone else

so it's clearly a bug for those using llvmpipe. That's the problem I would like to find a solution for, i.e., for the people who are forced to use llvmpipe because of a low power graphics card or a situation like mine.

bp0 (bullet-proof-0) said : #7

This is an issue for me too - I've got an Intel GM965 which is so wimpy I switched to low graphics mode, but want to continue to use launcher autohide. Right now, I can't because of the ghost problem.

Pablo Zubieta (pabloferz+) said : #8

I created this bug report


Anyone with this issue would help marking it as "Affecting you".

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