[adding various lists and the two other nouveau maintainers to the list of recipients] For the rest of this mail: [TLDR: I'm adding this report to the list of tracked Linux kernel regressions; the text you find below is based on a few templates paragraphs you might have encountered already in similar form. See link in footer if these mails annoy you.] On 18.01.23 21:59, Chris Clayton wrote: > Hi. > > I build and installed the lastest development kernel earlier this week. I've found that when I try the laptop down (or > reboot it), it hangs right at the end of closing the current session. The last line I see on the screen when rebooting is: > > sd 4:0:0:0: [sda] Synchronising SCSI cache > > when closing down I see one additional line: > > sd 4:0:0:0 [sda]Stopping disk > > In both cases the machine then hangs and I have to hold down the power button fot a few seconds to switch it off. > > Linux 6.1 is OK but 6.2-rc1 hangs, so I bisected between this two and landed on: > > # first bad commit: [0e44c21708761977dcbea9b846b51a6fb684907a] drm/nouveau/flcn: new code to load+boot simple HS FWs > (VPR scrubber) > > I built and installed a kernel with f15cde64b66161bfa74fb58f4e5697d8265b802e (the parent of the bad commit) checked out > and that shuts down and reboots fine. It the did the same with the bad commit checked out and that does indeed hang, so > I'm confident the bisect outcome is OK. > > Kernels 6.1.6 and 5.15.88 are also OK. > > My system had dual GPUs - one intel and one NVidia. Related extracts from 'lscpi -v' is: > > 00:02.0 VGA compatible controller: Intel Corporation CometLake-H GT2 [UHD Graphics] (rev 05) (prog-if 00 [VGA controller]) > Subsystem: CLEVO/KAPOK Computer CometLake-H GT2 [UHD Graphics] > > Flags: bus master, fast devsel, latency 0, IRQ 142 > > Memory at c2000000 (64-bit, non-prefetchable) [size=16M] > > Memory at a0000000 (64-bit, prefetchable) [size=256M] > > I/O ports at 5000 [size=64] > > Expansion ROM at 000c0000 [virtual] [disabled] [size=128K] > > Capabilities:  Vendor Specific Information: Len=0c <?> > > Capabilities:  Express Root Complex Integrated Endpoint, MSI 00 > > Capabilities: [ac] MSI: Enable+ Count=1/1 Maskable- 64bit- > > Capabilities: [d0] Power Management version 2 > > Kernel driver in use: i915 > > Kernel modules: i915 > > > 01:00.0 VGA compatible controller: NVIDIA Corporation TU117M [GeForce GTX 1650 Ti Mobile] (rev a1) (prog-if 00 [VGA > controller]) > Subsystem: CLEVO/KAPOK Computer TU117M [GeForce GTX 1650 Ti Mobile] > Flags: bus master, fast devsel, latency 0, IRQ 141 > Memory at c4000000 (32-bit, non-prefetchable) [size=16M] > Memory at b0000000 (64-bit, prefetchable) [size=256M] > Memory at c0000000 (64-bit, prefetchable) [size=32M] > I/O ports at 4000 [size=128] > Expansion ROM at c3000000 [disabled] [size=512K] > Capabilities:  Power Management version 3 > Capabilities:  MSI: Enable+ Count=1/1 Maskable- 64bit+ > Capabilities:  Express Legacy Endpoint, MSI 00 > Kernel driver in use: nouveau > Kernel modules: nouveau > > DRI_PRIME=1 is exported in one of my init scripts (yes, I am still using sysvinit). > > I've attached the bisect.log, but please let me know if I can provide any other diagnostics. Please cc me as I'm not > subscribed. Thanks for the report. To be sure the issue doesn't fall through the cracks unnoticed, I'm adding it to regzbot, the Linux kernel regression tracking bot: #regzbot ^introduced e44c2170876197 #regzbot title drm: nouveau: hangs on poweroff/reboot #regzbot ignore-activity This isn't a regression? This issue or a fix for it are already discussed somewhere else? It was fixed already? You want to clarify when the regression started to happen? Or point out I got the title or something else totally wrong? Then just reply and tell me -- ideally while also telling regzbot about it, as explained by the page listed in the footer of this mail. Developers: When fixing the issue, remember to add 'Link:' tags pointing to the report (the parent of this mail). See page linked in footer for details. Ciao, Thorsten (wearing his 'the Linux kernel's regression tracker' hat) -- Everything you wanna know about Linux kernel regression tracking: https://linux-regtracking.leemhuis.info/about/#tldr That page also explains what to do if mails like this annoy you.