Nouveau - Jan 2016 - [Bug 93733] New: Kernel message spam when HDMI display is turned off

https://bugs.freedesktop.org/show_bug.cgi?id=93733

            Bug ID: 93733
           Summary: Kernel message spam when HDMI display is turned off
           Product: xorg
           Version: unspecified
          Hardware: x86-64 (AMD64)
                OS: Linux (All)
            Status: NEW
          Severity: minor
          Priority: medium
         Component: Driver/nouveau
          Assignee: nouveau at lists.freedesktop.org
          Reporter: i.am.inuyasha at gmail.com
        QA Contact: xorg-team at lists.x.org

Created attachment 121073
  --> https://bugs.freedesktop.org/attachment.cgi?id=121073&action=edit
dmesg output

When using nouveau driver and turning off my HDMI screen, the kernel logs are
spammed with errors:

Jan 16 07:27:36 guilmon kernel: ------------[ cut here ]------------
Jan 16 07:27:36 guilmon kernel: WARNING: CPU: 6 PID: 172 at
include/drm/drm_crtc.h:1577 drm_helper_choose_crtc_dpms+0x93/0xa0
[drm_kms_helper]()
Jan 16 07:27:36 guilmon kernel: Modules linked in: fuse pci_stub vboxpci(O)
vboxnetflt(O) vboxnetadp(O) vboxdrv(O) f71882fg snd_hda_codec_hdmi joydev btusb 
Jan 16 07:27:36 guilmon kernel:  ansi_cprng algif_skcipher af_alg dm_crypt
dm_mod hid_generic usbhid hid sr_mod cdrom sd_mod uas usb_storage atkbd libps2
cr
Jan 16 07:27:36 guilmon kernel: CPU: 6 PID: 172 Comm: kworker/6:3 Tainted: G   
    W  O    4.3.3-2-ARCH #1
Jan 16 07:27:36 guilmon kernel: Hardware name: MSI MS-7693/970A-G46 (MS-7693),
BIOS V1.11 10/31/2012
Jan 16 07:27:36 guilmon kernel: Workqueue: events nvif_notify_work [nouveau]
Jan 16 07:27:36 guilmon kernel:  0000000000000000 00000000d3b82562
ffff8805ff7d3d10 ffffffff812c0dc9
Jan 16 07:27:36 guilmon kernel:  0000000000000000 ffff8805ff7d3d48
ffffffff81074f42 ffff880600bcf000
Jan 16 07:27:36 guilmon kernel:  ffff880600942000 ffff880600942000
0000000000000003 0000000000000000
Jan 16 07:27:36 guilmon kernel: Call Trace:
Jan 16 07:27:36 guilmon kernel:  [<ffffffff812c0dc9>] dump_stack+0x4b/0x72
Jan 16 07:27:36 guilmon kernel:  [<ffffffff81074f42>]
warn_slowpath_common+0x82/0xc0
Jan 16 07:27:36 guilmon kernel:  [<ffffffff8107508a>]
warn_slowpath_null+0x1a/0x20
Jan 16 07:27:36 guilmon kernel:  [<ffffffffa05e11f3>]
drm_helper_choose_crtc_dpms+0x93/0xa0 [drm_kms_helper]
Jan 16 07:27:36 guilmon kernel:  [<ffffffffa05e15c7>]
drm_helper_connector_dpms+0x77/0x100 [drm_kms_helper]
Jan 16 07:27:36 guilmon kernel:  [<ffffffffa0a67700>] ?
nv50_display_crtc_get+0x20/0x20 [nouveau]
Jan 16 07:27:36 guilmon kernel:  [<ffffffffa0a640fb>]
nouveau_connector_hotplug+0x3b/0xb0 [nouveau]
Jan 16 07:27:36 guilmon kernel:  [<ffffffffa09bca77>]
nvif_notify_work+0x27/0xa0 [nouveau]
Jan 16 07:27:36 guilmon kernel:  [<ffffffff8108c9ad>] ?
pwq_dec_nr_in_flight+0x4d/0xa0
Jan 16 07:27:36 guilmon kernel:  [<ffffffff8108cfeb>]
process_one_work+0x14b/0x440
Jan 16 07:27:36 guilmon kernel:  [<ffffffff8108d328>]
worker_thread+0x48/0x4a0
Jan 16 07:27:36 guilmon kernel:  [<ffffffff8108d2e0>] ?
process_one_work+0x440/0x440
Jan 16 07:27:36 guilmon kernel:  [<ffffffff81092e68>] kthread+0xd8/0xf0
Jan 16 07:27:36 guilmon kernel:  [<ffffffff81092d90>] ?
kthread_worker_fn+0x170/0x170
Jan 16 07:27:36 guilmon kernel:  [<ffffffff8158409f>]
ret_from_fork+0x3f/0x70
Jan 16 07:27:36 guilmon kernel:  [<ffffffff81092d90>] ?
kthread_worker_fn+0x170/0x170
Jan 16 07:27:36 guilmon kernel: ---[ end trace b434083d8b28aa12 ]---

When turning the display back on, the errors stop and things work normally
again.

System:
Nouveau v1.0.12-1
Xorg-server v1.18.0-4
Arch Linux AMD64 on AMD FX-8120, 24GB RAM
EVGA GTX 650 TI Boost, 1 GB, with three screens connected:
-HDMI
-DVI (upper port)
-DisplayPort (via VGA adaptor)

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--- Comment #1 from Rena Kunisaki <i.am.inuyasha at gmail.com> ---
By "turned off" I mean the display (a TV connected to HDMI port) is
powered off
or unplugged. Switching it to another input (instead of HDMI) also causes this
issue. The TV is an Insignia NS-24D420NA16, FW version reva_20150417_1-04-00.
Turning off the other displays doesn't cause this problem.

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--- Comment #2 from Ilia Mirkin <imirkin at alum.mit.edu> ---
I believe this commit:

https://github.com/skeggsb/linux/commit/0a882cadbc63fd2da3994af7115b4ada2fcbd638.patch

should fix the problem.

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poma <pomidorabelisima at gmail.com> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
           See Also|                            |https://bugs.freedesktop.or
                   |                            |g/show_bug.cgi?id=92307

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--- Comment #3 from Rena Kunisaki <i.am.inuyasha at gmail.com> ---
It looks like "spam" is not quite the right word here, as the messages
do seem
to stop after about a minute (and one more comes along once the screen is
turned back on).

For now I've switched to the binary driver since nouveau keeps crashing in
various ways.

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poma <pomidorabelisima at gmail.com> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
         Resolution|---                         |DUPLICATE
             Status|NEW                         |RESOLVED

--- Comment #4 from poma <pomidorabelisima at gmail.com> ---


*** This bug has been marked as a duplicate of bug 92307 ***

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