On Wed, Jan 27, 2021 at 03:33:02PM -0600, Bjorn Helgaas wrote: > On Sat, Dec 26, 2020 at 03:12:09AM -0800, Marc MERLIN wrote: > > This started with 5.5 and hasn't gotten better since then, despite > > some reports I tried to send. > > > > As per my previous message: > > I have a Thinkpad P70 with hybrid graphics. > > 01:00.0 VGA compatible controller: NVIDIA Corporation GM107GLM [Quadro M600M] (rev a2) > > that one works fine, I can use i915 for the main screen, and nouveau to > > display on the external ports (external ports are only wired to nvidia > > chip, so it's impossible to use them without turning the nvidia chip > > on). > > > > I now got a newer P73 also with the same hybrid graphics (setup as such > > in the bios). It runs fine with i915, and I don't need to use external > > display with nouveau for now (it almost works, but I only see the mouse > > cursor on the external screen, no window or anything else can get > > displayed, very weird). > > 01:00.0 VGA compatible controller: NVIDIA Corporation TU104GLM [Quadro RTX 4000 Mobile / Max-Q] (rev a1) > > > > > > after boot, when it gets the right trigger (not sure which ones), it > > loops on this evern 2 seconds, mostly forever. > > > > I'm not sure if it's nouveau's fault or the kernel's PCI PME's fault, or something else. > > IIUC there are basically two problems: > > 1) A 2 minute delay during boot > 2) Some sort of event every 2 seconds that kills your battery life > > Your machine doesn't sound unusual, and I haven't seen a flood of > similar reports, so maybe there's something unusual about your config. > But I really don't have any guesses for either one. > > It sounds like v5.5 worked fine and you first noticed the slow boot > problem in v5.8. We *could* try to bisect it, but I know that's a lot > of work on your part. > > Grasping for any ideas for the boot delay; could you boot with > "initcall_debug" and collect your "lsmod" output? I notice async_tx > in some of your logs, but I have no idea what it is. It's from > crypto, so possibly somewhat unusual? Another random thought: is there any chance the boot delay could be related to crypto waiting for entropy?
