On 20.3.2020 10.18, Stefan Fritsch wrote:
> Package: libgl1-mesa-dri
> Version: 20.0.2-1
> Followup-For: Bug #954311
>
>
> With this mesa version, there are severe drawing artifacts with the kde
> konsole terminal emulator that makes it unusable. I also see problems
> when marking text in thunderbird.
>
> Downgrading the following packages to 19.3.3-1 fixes the problem:
>
> libegl-mesa0
> libglapi-mesa
> libgbm1
> libgl1-mesa-dri
> libosmesa6
> libgbm-dev
> libglx-mesa0
>
> Cheers,
> Stefan
Please file it upstream, this is caused by the new 'iris' driver. In the
meantime, you can force the previous driver with this in a ~/.drirc:
<driconf>
<device driver="loader" kernel_driver="i915">
<option name="dri_driver" value="i965" />
</device>
</driconf>
Or run the app with the driver to verify it actually helps:
dri_driver=i965 ./app
--
t
