On 25 July 2017 at 16:03, Imran Chaudhry via Hampshire <
hampshire@???> wrote:
>
> When I realized that an ATI Radeon GPU was present I then installed
> the linux-firmware-nonfree package thinking that it would unlock the
> full power of the GPU. On reboot however we found that although the
> screen brightness could now be controlled, the graphical desktop was
> slower than the opensource drivers. Moving windows shows a visible
> re-draw and using a browser scrolling web pages seems to be slow.
>
linux-firmware-nonfree does NOT include any drivers. It only updates the
firmware used inside devices in the system but not the software that drives
them. There is documentation about the available graphics drivers for AMD
and ATI cards here [1].
Of note is that if you're running Debian 8 (Jessie) with Gnome then you
won't be able to run the proprietary drivers due to them not supplying the
EGL protocol required [2].
The pattern to install the proprietary driver is to enable the non-free
repository in APT and then install the packages linux-headers-<kernel
version> and fglrx-driver:
$ sudo aptitude -r install linux-headers-$(uname -r|sed 's,[^-]*-[^-]*-,,')
fglrx-driver
[1]
https://wiki.debian.org/ATIProprietary
[2]
https://www.debian.org/releases/jessie/amd64/release-notes/ch-information#gnome-fglrx
--
Daniel Llewellyn
--
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