I'm running 4.11Got a bit further by removing the MESA libraries for GLX support. That removed many graphics applications and libraries. Then added xserver-xorg-core again and now X starts again.Some work to do because my (wireless USB) keyboard is not recognised in the x session but that should be doable. So it looks like it's OK again but not sure what the crucial step was...On 20 Aug 2017 00:54, "Zoltán Herman" <zoltanhbz@gmail.com> wrote:And what kind of kernel is installed 4.9 or 4.11?Check the kernel log to see if the firmware has been loaded.>>I have a home theatre PC with an AMD A6-3500 APU. Bit of an oldie but still plays everything fine. The drivers supplied by the Jessie repositories (including fglrx for hardware acceleration) worked fine.But then I upgraded to Stretch and suddenly started without X. The debian supplied drivers don't seem to support the A6 any more?I got everything working again 3 weeks ago by installing the proprietary drivers (catalyst 15.9). But now X has gone again and the same catalyst package refuses to install.The error message that the installer gives is that the X version is too low for catalyst?Then I removed (--purge) xserver-xorg-core and reinstalled it. But when I now start X it says 'no screens found'..Is there a way to get the AMD APUs off that generation working in Stretch working again?Or to at least start X again (with a very low resolution, assuming basic hardware)?<<Add non-free to sources.listupdateinstall firmware-amd-graphicsetc.<<.