[Nouveau] [Bug 101665] New: lspci blocks forever with a GP107M

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=101665

            Bug ID: 101665
           Summary: lspci blocks forever with a GP107M
           Product: xorg
           Version: unspecified
          Hardware: Other
                OS: All
            Status: NEW
          Severity: normal
          Priority: medium
         Component: Driver/nouveau
          Assignee: nouveau at lists.freedesktop.org
          Reporter: kenneth at whitecape.org
        QA Contact: xorg-team at lists.x.org

Hello,

I have a Dell XPS 15 9560 with a GTX 1050 Mobile (GP107M) and an Intel Kabylake
CPU.  Using Kernel 4.11.3 on the Arch installer image, whenever I run 'lspci',
it blocks indefinitely and never prints any output.

After running lspci, dmesg contains:

[   54.819264] nouveau 0000:01:00.0: Refused to change power state, currently
in D3
[   54.879968] nouveau 0000:01:00.0: Refused to change power state, currently
in D3
[   54.879973] nouveau 0000:01:00.0: Refused to change power state, currently
in D3
[   54.879974] nouveau 0000:01:00.0: DRM: resuming object tree...

Eventually the scheduler gets cranky about the hung process and starts spewing
[  245.385522] INFO: task lspci:576 blocked for more than 120 seconds.
and a backtrace every 2 minutes.

Blacklisting nouveau makes lspci work.

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