Hi Michel, So summarizing with Linux kernel 4.17-rc6 on Ubuntu 18.04 using AMD RX 460/RX 550 I am not able to enter X. The same system with AMD Radeon R7 240 not only enters X as also runs the OpenCL kernel that RX 460 / RX 550 are unable to run for all the kernels that I have tested. Could this also be a Mesa issue, regarding OpenCL on RX 460? Regards, Luís On Thu, May 24, 2018 at 9:55 AM, Luís Mendes wrote: > Hi Michel, > > I will have to check previous rc releases of 4.17 to see if it wasn't > already happening, before trying any possible git bisect. > As an update I can say that an AMD Radeon R7 240 works fine on the same > system with the same kernel and I am able to run the OpenCL kernels, that I > couldn't with RX 460/RX 550. > > Regards, > Luís > > On Thu, May 24, 2018 at 9:30 AM, Michel Dänzer wrote: > >> On 2018-05-24 12:06 AM, Luís Mendes wrote: >> > I've tried Linux 4.17-rc6 with Ubuntu 18.04 on Tyan S7002 and I am not >> even >> > able see lightdm/gdm3 as system hangs when starting X. >> > Having SR-IOV enabled or disabled makes no difference. >> > Tested with AMD RX 460. >> > When X is supposed to start the system hangs and only a rectangular >> region >> > on the top left corner screen remains with console text messages from >> the >> > boot process while the remaining of the screen is just black. I am >> unable >> > to do anything with the keyboard, switching to console does not work, >> > ctrl-alt-del also doesn't work. I've to do a cold reset. >> >> Can you isolate which change introduced this new issue with git bisect? >> >> >> -- >> Earthling Michel Dänzer | http://www.amd.com >> Libre software enthusiast | Mesa and X developer >> > >