Created attachment 117849 [details]
dmesg.log without patches

Created attachment 117850 [details]
Xorg.0.log from nvidia driver

(In reply to kyle.devir from comment #0)
> I have an Nvidia GeForce GTX 880M, which nouveau does not play with nicely.

Please try the following patch: http://cgit.freedesktop.org/~darktama/nouveau/commit/?h=hack-gk106m&id=64b75967fe13499f12876ec10a31d9141e828714

Make sure to use nouveau.runpm=0

My mmiotrace.log.xz is 5.6 MiB... I will have to split it, I guess, because I have already compressed it with "xz -9".

Created attachment 117851 [details]
mmiotrace.log.xz-part-aa from nvidia driver

Created attachment 117852 [details]
mmiotrace.log.xz-part-ab from nvidia driver

Created attachment 117853 [details]
mmiotrace.log.xz-part-ac from nvidia driver

Thanks Ilia. I will test it out, and get back to you.

Created attachment 117854 [details]
dmesg.txt with c800 nouveau patch

The patch did nothing except turn off the screen, for some reason. With some careful typing, I saved the dmesg output.

Are there any other patches that you could recommend trying?

We have a downstream reporter with what looks like much the same issue:

https://bugzilla.redhat.com/show_bug.cgi?id=1264872

Sep 23 20:06:31 w50.localdomain kernel: nouveau E[  PGRAPH][0000:01:00.0] wait for idle timeout (en: 1, ctxsw: 0, busy: 1)
Sep 23 20:06:33 w50.localdomain kernel: nouveau E[  PGRAPH][0000:01:00.0] wait for idle timeout (en: 1, ctxsw: 0, busy: 1)
Sep 23 20:06:35 w50.localdomain kernel: nouveau E[  PGRAPH][0000:01:00.0] wait for idle timeout (en: 1, ctxsw: 0, busy: 1)
Sep 23 20:06:37 w50.localdomain kernel: nouveau E[  PGRAPH][0000:01:00.0] wait for idle timeout (en: 1, ctxsw: 0, busy: 1)
Sep 23 20:06:39 w50.localdomain kernel: nouveau E[  PGRAPH][0000:01:00.0] grctx template channel unload timeout
Sep 23 20:06:39 w50.localdomain kernel: nouveau E[  PGRAPH][0000:01:00.0] failed to construct context
Sep 23 20:06:39 w50.localdomain kernel: nouveau E[  PGRAPH][0000:01:00.0] init failed, -16
Sep 23 20:06:39 w50.localdomain gnome-session[1428]: nvc0_screen_create:716 - Error allocating PGRAPH context for M2MF: -16

Adapter there is:

01:00.0 VGA compatible controller [0300]: NVIDIA Corporation GK106GLM [Quadro K2100M] [10de:11fc] (rev a1)

Ben pushed an improved version of that c800 patch into 4.3-rc --

http://cgit.freedesktop.org/nouveau/linux-2.6/commit/?h=linux-4.3&id=205877f9156daebb975fb46205488da6fdf5b3f5

and enabled it by default on the Tecra W50:

http://cgit.freedesktop.org/nouveau/linux-2.6/commit/?h=linux-4.3&id=778613e583994d947960a7f177226d0e7b5ef124

If you have different hw, you can try it out by booting with

nouveau.config=War00C800_0=1

The patch kind of works. A full Plasma session on Xorg did not work. Screen updates froze, updating every full minute, or so. From that observation, the desktop did work. With some luck, I opened an application, which only showed up after a long while.

Also, I was able to start Weston, but there were minor visual glitches with applications I started on Xwayland.

I was also able to start kwin_wayland with plasmashell running on Xwayland, but plasmashell soon crashed.

afaik plasmashell has its own independent problems with nouveau, so not a great thing to start testing with :)

Created attachment 118419 [details]
dmesg.log with 205877f9156daebb975fb46205488da6fdf5b3f5 patch

Here is my dmesg.log from use of the updated patch.

I used nouveau.config=War00C800_0=1 and nouveau.runpm=0 as my kernel options. My software versions are still the same.

(In reply to Ilia Mirkin from comment #14)
> afaik plasmashell has its own independent problems with nouveau, so not a
> great thing to start testing with :)

That was a shockingly fast reply! Thanks, Ilia. :)

So... shall I continue testing with Weston and Xwayland, then? What issues does plasmashell have with Nouveau? Where should I start looking?

(In reply to kyle.devir from comment #16)
> (In reply to Ilia Mirkin from comment #14)
> > afaik plasmashell has its own independent problems with nouveau, so not a
> > great thing to start testing with :)
> 
> That was a shockingly fast reply! Thanks, Ilia. :)
> 
> So... shall I continue testing with Weston and Xwayland, then? What issues
> does plasmashell have with Nouveau? Where should I start looking?

https://bugs.freedesktop.org/show_bug.cgi?id=92077

Ah, thanks, Ilia! I will keep track of it, then. :)

Created attachment 118437 [details]
journal log -b-1 failed boot

I am the user Adam Williamson is referring to above with the Toshiba w50
Trying Fedora 23 beta with all installed updates.

I tried with kernel options:

noveau.config=War00c800_0=1

and:

noveau.config=War00c800_0=1 nouveau.runpm=0

It still fails to boot.

Linux version 4.2.1-300.fc23.x86_64

Don't know what fedora patches are in there, but the upstream 4.2.1 doesn't have the nouveau logic in question. You need 4.3-rc1 (or rc2) to get it.

I have tested and can confirm that using rawhide kernel 4.3.0-0.rc2.git1.2.fc24.x86_64 fixes the issues for me and boots using default options.

Thanks.

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