[Bug 100382] New: [SKL][SNA/DRI2] [drm:drm_wait_vblank [drm]] *ERROR* Unsupported type value 0x111, supported mask 0x7400003f

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=100382

            Bug ID: 100382
           Summary: [SKL][SNA/DRI2] [drm:drm_wait_vblank [drm]] *ERROR*
                    Unsupported type value 0x111, supported mask
                    0x7400003f
           Product: xorg
           Version: git
          Hardware: x86-64 (AMD64)
                OS: Linux (All)
            Status: NEW
          Severity: normal
          Priority: medium
         Component: Driver/intel
          Assignee: chris at chris-wilson.co.uk
          Reporter: peter at lekensteyn.nl
        QA Contact: intel-gfx-bugs at lists.freedesktop.org

Created attachment 130445
  --> https://bugs.freedesktop.org/attachment.cgi?id=130445&action=edit
Xorg.0.log

On some actions, like opening a new window or dragging it around, the following
message is visible in dmesg:

    [drm:drm_wait_vblank [drm]] *ERROR* Unsupported type value 0x111, supported
mask 0x7400003f

This is always reproduced, but it only occurs when PRIME output slaving is
active, and only when actions are executed on the external monitor connected to
the Nvidia GPU (rather than the laptop monitor). Additionally, the external
monitor must be primary (xrandr --output DP-1-1 --primary).

xorg-server 1.19.3-1
xf86-video-intel 1:2.99.917+767+g7e9e92c8-1
xf86-video-nouveau 1.0.14-1
Distro: Arch Linux x86_64 (testing repo enabled)
Desktop environment: Plasma 5.9.4-1
Laptop model: Clevo P651RA
CPU: i7-6700HQ
Display connector: miniDP (nouveau), eDP (Intel)

$ xrandr --listproviders
Providers: number : 2
Provider 0: id: 0x8c cap: 0xb, Source Output, Sink Output, Sink Offload crtcs:
4 outputs: 2 associated providers: 1 name:Intel
Provider 1: id: 0x66 cap: 0x7, Source Output, Sink Output, Source Offload
crtcs: 4 outputs: 3 associated providers: 1 name:nouveau

Based on the type value (i.e. missing DRM_VBLANK_EVENT) and the call trace
(perf trace --call-graph=dwarf -e syscalls:sys_enter_ioctl && perf report
points to intel_drv.so), I guess that sna_query_vblank in src/sna/sna_dri2.c is
responsible for this spew.

(Maybe it is (or it is not) related to bug 92327.)

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