https://bugzilla.kernel.org/show_bug.cgi?id=204735
--- Comment #5 from andyjackson (jydc...@21cn.com) --- (In reply to Zhang Rui from comment #3) > (In reply to andyjackson from comment #2) > > with nouveau login desktop ok, run lspci hangs, didnt try suspend/resume > but > > i think will hangs too. > > > okay, then that is the first problem, which I think is more important. so it's not the driver issue but acpi driver part? more /sys/kernel/debug/vgaswitcheroo/switch see "1:DIS: :DynOff:0000:01:00.0", nvidia gpu already poweroff. > Let me summarize this, > 1. what would happen if you run with intel graphics only? > x/lspci hangs, right? > 2. what would happen if you run with kernel nvidia graphics driver? lspci hangs, right? my noteboot BIOS can not disable nvidia gpu like old notebook, so can not boot only with intel gpu. but try this: blacklist nouveau, boot as single user(add kernel parm:single) and login console, modprobe -r nouveau, at this time lspci or start x just fine because nvidia gpu is keep power ON. if modprobe bbswitch make nvidia gpu power OFF, lspci or startx got totally hangs. > 3. what would happen if you run with intel graphics and non-free nvidia > graphics driver? no hangs, because nvidia gpu keep power ON, bbswitch can not power off it. > nvidia graphics got powered on after resume, which is the problem in this > bug report, right? yes. and in my case i think when suspend nvidia gpu already power back ON. -- You are receiving this mail because: You are watching the assignee of the bug. _______________________________________________ acpi-bugzilla mailing list acpi-bugzilla@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/acpi-bugzilla
