Hi Marc, I appreciate your persistence on this. I am frankly surprised that you've put up with this so long. 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? Bjorn
