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I recently installed Ubuntu 12.04 on an old Sony laptop and I've had a problem I've never seen before. The side bar menu text, the dropdown menu text and sometimes the background image weren't rendering properly. After a system update it got a little better, but still after using the computer for a few days the problem comes back. Here is a screenshot of how it looks like:

The problem persists also when I use Gnome or Unity2D. I don't know if it is a driver issue or a hardware problem or what it is. Has someone else seen this problem and knows what causes it and hopefully how to fix it?

More info:

lspci -nnk | grep -iA2 VGA 00:02.0 VGA compatible controller [0300]: Intel Corporation Mobile 4 Series Chipset Integrated Graphics Controller [8086:2a42] (rev 07)
Subsystem: Sony Corporation Device [104d:9035] 
Kernel driver in use: i915
karel
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Physico
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1 Answers1

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as intel graphics driver is a part of Xorg, I believe the best solution here be:

check if rendering is yes with command:

glxinfo | grep render

for this you need mesa-utils

sudo apt-get install mesa-utils

you should get something like this:

direct rendering: Yes
OpenGL renderer string: GeForce XXXX PCIe/SSE2
GL_KTX_buffer_region, GL_NVX_conditional_render, 
GL_OES_fbo_render_mipmap, GL_OES_get_program_binary, GL_OES_mapbuffer,

the last, you can try to reinstall graphics driver:

sudo apt-get install --reinstall xserver-xorg-video-intel

then reboot X

sudo service lightdm restart

or

sudo /etc/init.d/lightdm restart

if it still doesn't work maybe you should file this as a bug.

apport-bug xorg
JoKeR
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