Visual glitches all over the place
An update: I tried using the proprietary fglrx driver and that fixed
the problem (though it created another one: I couldn't switch from X
to a virtual terminal). Anyway, I'll see if I can find some
configuration parameter for the radeon driver that eliminates the
problem; otherwise I'll try to contact the radeon driver developers
and seek some advice.
On Fri, Apr 23, 2010 at 9:28 PM, Adriano Vilela Barbosa
> I sent the email below earlier today to this list, but apparently it
> didn't go through. Maybe attachments are not allowed? If that's the
> case, I apologize.
> Anyway, the original email is below, and the figure showing the visual
> glitches I mention can be retrieved at
> Any help is greatly appreciated.
> Thank you,
> On Fri, Apr 23, 2010 at 9:57 AM, Adriano Vilela Barbosa
> <firstname.lastname@example.org> wrote:
>> I'm using KDE 4.3.4 on Debian Testing and over the past few days I
>> started seeing lots of visual glitches all over the place. To have an
>> idea of what I'm talking about, please take a look at the attached
>> file, which is a screenshot of my desktop. Even non-Qt applications
>> are affected. Look for example at the horizontal scroll-bar in the
>> window showing an audio waveform at the bottom. It's totally
>> corrupted. That's a Praat (http://packages.debian.org/squeeze/praat)
>> window, which uses the LessTif toolkit.
>> These problems happen on my laptop. However, I don't see any of that
>> on my desktop, which also runs Debian Testing, with pretty much the
>> same set of packages installed. An immediate difference between the
>> two systems is that the laptop has an ATI card using the free radeon
>> driver, whereas the desktop has an nVidia GeForce card using the
>> proprietary nvidia driver. I suspect some upgrade over the past few
>> days is the culprit. I'm going to do some testing over the weekend so
>> I can provide more details, but for now I would like to know if
>> anybody else has experienced such problems.
>> Thanks a lot,
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