On Tue, Dec 13, 2016 at 12:09 PM, Peter Humphrey <pe...@prh.myzen.co.uk> wrote: > Hello list, > > Has anyone stumbled over a display problem with this kernel? Copying the > .config from 4.8.14, tweaking with oldconfig and compiling left me with a > blank display and no booting activity. > > The display card is an AMD/ATI Tonga Radeon R9 380X and I load the latest > microcode during kernel compilation. I have VIDEO_CARDS="amdgpu radeonsi" in > make.conf. Fine with earlier kernel versions but not with 4.9.0. >
I haven't really had time to investigate but I've had an issue like this with my radeon card (using KMS) for a few weeks now. I'm on the 4.4 upstream kernel. sddm and X11 in general work just fine, but if I try to switch to another virtual console the mouse cursor disappears but the X11 display otherwise remains in place. I suspect some kind of regression for radeon ended up in the stable queue. I'll have to take a closer look at my kernel config to see if perhaps it is now using a newer driver, but that seems unlikely as usually there aren't configuration changes in the middle of a stable series (and I've been on 4.4 for months now). -- Rich
