bugzilla | 23 Feb 01:18 2013

[Bug 61321] New: [regression][NV4c] System hang while loading gdm on 3.7 kernel (works on 3.6)

Priority Bug ID Keywords Assignee Summary QA Contact Severity Classification OS Reporter Hardware Status Version Component Product
medium
61321
regression
nouveau <at> lists.freedesktop.org
[regression][NV4c] System hang while loading gdm on 3.7 kernel (works on 3.6)
xorg-team <at> lists.x.org
major
Unclassified
Linux (All)
cesarb <at> cesarb.net
x86-64 (AMD64)
NEW
unspecified
Driver/nouveau
xorg

Since upgrading from a 3.6.10 kernel to a 3.7.9 kernel (Fedora 18), the system started hanging while loading gdm. Going back to the 3.6 kernel works, going to a 3.8 kernel hangs the same way. The hang manifests first as the gdm spinning "loading" cursor stopping, followed a few seconds later by a screen full of a repeated noise pattern (different for each boot, but looks like a small block of noise tiled all over the screen). The machine does not answer to the keyboard (num lock/caps lock LEDs) or the network (by this point NetworkManager already started the interface, so I can get a few pings before it hangs). In particular, it is not the initial modeset when loading the module which hangs; it is only gdm. If I boot with systemd.unit=multi-user.target, I can boot without any hangs, load netconsole, and isolate graphical.target to load gdm to see it hang. I used that to capture the kernel messages until the hang for the Fedora 3.7.9 kernel. I also managed to capture the Xorg.0.log for the attempt with the 3.8 kernel (booting directly into graphical.target). The relevant version numbers are: kernel-3.6.10-4.fc18.x86_64 (works) kernel-3.7.9-201.fc18.x86_64 (hangs) Upstream 3.8 kernel with a Fedora config (hangs) xorg-x11-server-Xorg-1.13.2-2.fc18.x86_64 xorg-x11-drv-nouveau-1.0.6-1.fc18.x86_64 libdrm-2.4.42-1.fc18.x86_64 mesa-dri-drivers-9.0.1-4.fc18.x86_64 I also attempted once booting 3.7.9 with nouveau.config=NvPCIE=0 as suggested at bug #58776; it did not make any visible difference.
You are receiving this mail because:
  • You are the assignee for the bug.
_______________________________________________
Nouveau mailing list
Nouveau@...
http://lists.freedesktop.org/mailman/listinfo/nouveau
bugzilla | 23 Feb 01:20 2013

[Bug 61321] [regression][NV4c] System hang while loading gdm on 3.7 kernel (works on 3.6)

Comment # 1 on bug 61321 from Created attachment 75390 [details] First part of attempt with 3.7.9 First part of attempt with the 3.7.9 kernel, captured with dmesg after booting into multi-user.target
You are receiving this mail because:
  • You are the assignee for the bug.
_______________________________________________
Nouveau mailing list
Nouveau@...
http://lists.freedesktop.org/mailman/listinfo/nouveau
bugzilla | 23 Feb 01:21 2013

[Bug 61321] [regression][NV4c] System hang while loading gdm on 3.7 kernel (works on 3.6)

Comment # 2 on bug 61321 from Created attachment 75391 [details] Second part of attempt with 3.7.9 Second part of attempt with the 3.7.9 kernel, captured with netconsole before and during systemd isolate of graphical.target
You are receiving this mail because:
  • You are the assignee for the bug.
_______________________________________________
Nouveau mailing list
Nouveau@...
http://lists.freedesktop.org/mailman/listinfo/nouveau
bugzilla | 23 Feb 01:22 2013

[Bug 61321] [regression][NV4c] System hang while loading gdm on 3.7 kernel (works on 3.6)

Comment # 3 on bug 61321 from Created attachment 75392 [details] lspci -v lspci -v (with 3.6 kernel)
You are receiving this mail because:
  • You are the assignee for the bug.
_______________________________________________
Nouveau mailing list
Nouveau@...
http://lists.freedesktop.org/mailman/listinfo/nouveau
bugzilla | 23 Feb 01:25 2013

[Bug 61321] [regression][NV4c] System hang while loading gdm on 3.7 kernel (works on 3.6)

Comment # 4 on bug 61321 from Created attachment 75393 [details] Xorg.0.log.old from attempt at kernel 3.8, copied after boot to working kernel This was from when I attempted booting into the 3.8 kernel. Notice the block of NUL bytes at end of the file, suggesting it might have been truncated.
You are receiving this mail because:
  • You are the assignee for the bug.
_______________________________________________
Nouveau mailing list
Nouveau@...
http://lists.freedesktop.org/mailman/listinfo/nouveau
bugzilla | 23 Feb 01:28 2013

[Bug 61321] [regression][NV4c] System hang while loading gdm on 3.7 kernel (works on 3.6)

Comment # 5 on bug 61321 from If there is anything else I could add to the kernel command line to get better logs, just ask and I will try again. I could not easily find on the wiki an authoritative list of debugging parameters, so I might not have made it print enough debugging noise.
You are receiving this mail because:
  • You are the assignee for the bug.
_______________________________________________
Nouveau mailing list
Nouveau@...
http://lists.freedesktop.org/mailman/listinfo/nouveau
bugzilla | 23 Feb 19:27 2013

[Bug 61321] [regression][NV4c] System hang while loading gdm on 3.7 kernel (works on 3.6)

Comment # 6 on bug 61321 from I just did a bisect. The symptoms change mid bisect (losing video at the initial modeset, instead of hanging completely at gdm), so I am not completely sure, but here are the results: 70ee6f1cd6911098ddd4c11ee21b69dbe51fb3f9 is the first bad commit commit 70ee6f1cd6911098ddd4c11ee21b69dbe51fb3f9 Author: Ben Skeggs <bskeggs <at> redhat.com> Date: Fri Jul 13 16:49:49 2012 +1000 drm/nv04-nv40/fifo: remove use of nouveau_gpuobj_new_fake() Signed-off-by: Ben Skeggs <bskeggs <at> redhat.com> :040000 040000 29a991b723d037cfe7fb7a5dd3a34b8321e489d1 cb531c96db341f2340f62511cb7dc1c2b84cefc5 M drivers And the bisect log: # bad: [29594404d7fe73cd80eaa4ee8c43dcc53970c60e] Linux 3.7 # good: [a0d271cbfed1dd50278c6b06bead3d00ba0a88f9] Linux 3.6 git bisect start 'v3.7' 'v3.6' '--' 'drivers/gpu/drm/nouveau/' # bad: [cd8c14b407d59ac4b8d324f5f9cdf223a2079c88] drm/nvc0/ltcg: read LTS count at startup git bisect bad cd8c14b407d59ac4b8d324f5f9cdf223a2079c88 # bad: [c4afbe74cebf887d3d8e7a11aa93bebcb6a3e2e1] drm/nvc0-/gr: share headers between fermi and kepler graphics code git bisect bad c4afbe74cebf887d3d8e7a11aa93bebcb6a3e2e1 # good: [0134a97979a0abc1c756b0fe491e074693c2bdf5] drm/nv50-/instmem: allocate vram for kernel objects from end of vram git bisect good 0134a97979a0abc1c756b0fe491e074693c2bdf5 # bad: [8a9b889e668a5bc2f4031015fe4893005c43403d] drm/nouveau: remove last use of nouveau_gpuobj_new_fake() git bisect bad 8a9b889e668a5bc2f4031015fe4893005c43403d # bad: [70ee6f1cd6911098ddd4c11ee21b69dbe51fb3f9] drm/nv04-nv40/fifo: remove use of nouveau_gpuobj_new_fake() git bisect bad 70ee6f1cd6911098ddd4c11ee21b69dbe51fb3f9 # good: [af7afbd2e1409168698bde2f2846848b07d05d12] drm/nv04-nv40/instmem: duplicate nv04 code as nv40, remove alternate paths git bisect good af7afbd2e1409168698bde2f2846848b07d05d12 # good: [5787640db6ae722aeadb394d480c7ca21b603e34] drm/nv04-nv40/instmem: remove use of nouveau_gpuobj_new_fake() git bisect good 5787640db6ae722aeadb394d480c7ca21b603e34 And my notes on the bisect kernels: cd8c14b407d59ac4b8d324f5f9cdf223a2079c88 hangs at gdm c4afbe74cebf887d3d8e7a11aa93bebcb6a3e2e1 hangs at initial modeset 0134a97979a0abc1c756b0fe491e074693c2bdf5 works 8a9b889e668a5bc2f4031015fe4893005c43403d initial modeset: blank screen followed by dpms off, keyboard still works 70ee6f1cd6911098ddd4c11ee21b69dbe51fb3f9 again blank screen/dpms off at initial modeset af7afbd2e1409168698bde2f2846848b07d05d12 works 5787640db6ae722aeadb394d480c7ca21b603e34 works
You are receiving this mail because:
  • You are the assignee for the bug.
_______________________________________________
Nouveau mailing list
Nouveau@...
http://lists.freedesktop.org/mailman/listinfo/nouveau
bugzilla | 23 Feb 19:35 2013

[Bug 61321] [regression][NV4c] System hang while loading gdm on 3.7 kernel (works on 3.6)

Comment # 7 on bug 61321 from Searching for that commit id, I found https://bugzilla.kernel.org/show_bug.cgi?id=50091 which has very similar symptoms (hang on X server startup, garbled screen) and is also NV40 family.
You are receiving this mail because:
  • You are the assignee for the bug.
_______________________________________________
Nouveau mailing list
Nouveau@...
http://lists.freedesktop.org/mailman/listinfo/nouveau
bugzilla | 23 Feb 20:34 2013

[Bug 61321] [regression][NV4c] System hang while loading gdm on 3.7 kernel (works on 3.6)

Comment # 8 on bug 61321 from Finally made it work on both 3.8 and 3.7.9: just add nouveau.noaccel=1 and there is no hang. Of course, that does not fix the bug, just avoids it.
You are receiving this mail because:
  • You are the assignee for the bug.
_______________________________________________
Nouveau mailing list
Nouveau@...
http://lists.freedesktop.org/mailman/listinfo/nouveau
bugzilla | 23 Feb 20:37 2013

[Bug 61321] [regression][NV4c] System hang while loading gdm on 3.7 kernel (works on 3.6)

Comment # 9 on bug 61321 from Created attachment 75421 [details] dmesg for 3.8 with nouveau.noaccel=1
You are receiving this mail because:
  • You are the assignee for the bug.
_______________________________________________
Nouveau mailing list
Nouveau@...
http://lists.freedesktop.org/mailman/listinfo/nouveau
bugzilla | 23 Feb 20:37 2013

[Bug 61321] [regression][NV4c] System hang while loading gdm on 3.7 kernel (works on 3.6)

Comment # 10 on bug 61321 from Created attachment 75422 [details] Xorg.0.log for 3.8 with nouveau.noaccel=1
You are receiving this mail because:
  • You are the assignee for the bug.
_______________________________________________
Nouveau mailing list
Nouveau@...
http://lists.freedesktop.org/mailman/listinfo/nouveau
bugzilla | 23 Feb 21:38 2013

[Bug 61321] [regression][NV4c] System hang while loading gdm on 3.7 kernel (works on 3.6)

changed bug 61321
What Removed Added
CC   comer352l <at> web.de
See Also   https://bugzilla.kernel.org/show_bug.cgi?id=50091

You are receiving this mail because:
  • You are the assignee for the bug.
_______________________________________________
Nouveau mailing list
Nouveau@...
http://lists.freedesktop.org/mailman/listinfo/nouveau
bugzilla | 29 May 12:54 2013

[Bug 61321] [regression][NV4c] System hang while loading gdm on 3.7 kernel (works on 3.6)

changed bug 61321
What Removed Added
Status NEW NEEDINFO
Assignee nouveau <at> lists.freedesktop.org m.b.lankhorst <at> gmail.com

Comment # 11 on bug 61321 from Created attachment 79949 [details] [review] initialize ramfc to zero Just guessing, based on the commit itself. Does the patch help?
You are receiving this mail because:
  • You are the assignee for the bug.
_______________________________________________
Nouveau mailing list
Nouveau@...
http://lists.freedesktop.org/mailman/listinfo/nouveau

Gmane