On Tue, Jul 14, 2020 at 07:38:21PM -0400, David Farrier wrote: > > On Tue, 14 Jul 2020, Aaron Lu wrote: > > > > Anyway, I downloaded this package directly from the mirror's pool: > > linux-image-4.19.0-10-amd64-unsigned_4.19.131-2_amd64.deb > > Is the above package correct? > > > > And the good news is, this kernel also works fine :-) > > > > I tried something similar, but am having mixed results. I added > "buster-proposed-updates main" to sources.list, and installed > linux-image-4.19.0-10-amd64. Which I think should be the same as Aaron Lu > retrieved, except I have the signed variant. I installed on a Panasonic > CF-19 laptop running Debian 10.4 and xfce. > > Recovering from screen blanking and locking does work with that version of > the kernel. So, on my computer, it does work better than the standard buster > kernel 4.19.0-9. However, suspend and hibernate still don't work. I haven't
I never tried suspend/hibernation before but I just gave it a shot. Interestingly, the display can be powered back on after resume even with 4.19.0-9 and I can then input my password and unlock the screen. My gut feeling is that, in the case of suspend/resume, the display is powered by the gpu dirver which is i915 in my case while in the normal lock/unlock case, the display is controlled by light-locker through some mechanism and the communication between light-locker and the gpu driver broke somehow. > had a chance to try Aaron Lu's suggestion of backported kernel 5.6.0. Not a suggestion, just installed what is available in the backport repo of that time :-) > However, I have been using 5.4.0 for a while, and blanking, locking, > suspend, and hibernate all work with that version. > > Hope this information is helpful.