Red Hat Bugzilla – Bug 1275099
ThinkPad W540 (with nVidia Quadro K1100M) unbootable
Last modified: 2016-06-13 15:11:44 EDT
Description of problem:
I have ThinkPad W540 and I use the nouveau driver for NVidia Quadro K1100M (the BIOS doesn't seem to allow swithing to the integrated graphics). For me the boot hangs (unless <Esc> is pressed to get the Fedora startup log) since I installed Fedora 20 (3.11.? kernel) and after I upgraded to Fedora 21 and now 22 (kernel v4.2.3-200). Before Fedora 22 the screen typically gets flooded with the following message:
nouveau E[ PFIFO[0000:01:00.0] SCHED_ERROR [UNK06]
The couple more messages follow before the boot hangs:
nouveau E[ DRM] failed to idle channel 0xcccc0001 [DRM]
pci_pm_runtime_suspend(): nouveau_pmops_runtime_suspend 0x0/0xf0 [nouveau] returns -16
With Feodra 22, the behavior changed: if I just let the system boot, it hangs silently. If I wait several seconds and then press <Esc>, the above messages appear, then the system continus booting up to:
Starting Terminate Plymouth Boot Screen...
and then hangs. If I press <Esc> once the screen swithces to a graphical console, I can boot all the way, and run X.
Version-Release number of selected component (if applicable):
kernel-4.2.3-200 (and earlier).
Steps to Reproduce:
1. Just boot.
2. Optionally press <Esc> after waiting several seconds.
Boot should secceed.
Starting with the kernel v4.3 (?) it now works.