Hi, I suspect it may have to do with the 5th gen (Broadwell Desktop) only, as they have a very special (and powerful) iGPU. And maybe that's why the bug passed inadvertently so much time: those CPUs didn't sell very well.
Yes, I have that package installed: ||/ Name Version Architecture Description +++-===============-============-============-=========================================== ii intel-microcode 3.20201110.1 amd64 Processor microcode firmware for Intel CPUs When I first upgraded to 5.7, I couldn't boot, and my first thought was: this seems to be such a big bug, so they probably have already noticed, and I didn't report it. It's been more than half a year, kernel 5.9, and the bug is still there, so I strongly suspect that the only affected CPUs are those with Intel Iris Pro 6200 (there are only 4 models with that iGPU). Thanks, Alex On 11/22/20 5:53 PM, Georgi Naplatanov wrote: > Hi, > > I have Intel i5 4th generation and I have no such problem with Linux > kernel 5.9.6. > > Do you have "intel-microcode" package installed on those computers? > > Kind regards > Georgi >