Ubuntu
linux package

  1. Bug #1310762
  2. Comment #30

Comment 30 for bug 1310762

Revision history for this message
ALU (c-launchpadmail) wrote :

Also getting this with a zBook 15 and Ubuntu 14.10
Linux 3.16.0-28-generic #38-Ubuntu SMP Fri Dec 12 17:37:40 UTC 2014 x86_64 x86_64 x86_64 GNU/Linux

$ lspci | grep -i vga
00:02.0 VGA compatible controller: Intel Corporation 4th Gen Core Processor Integrated Graphics Controller (rev 06)
01:00.0 VGA compatible controller: NVIDIA Corporation GK107GLM [Quadro K1100M] (rev ff)

$ dpkg --list | grep nvidia
ii nvidia-331 331.113-0ubuntu0.1 amd64 NVIDIA binary driver - version 331.113
ii nvidia-331-uvm 331.113-0ubuntu0.1 amd64 NVIDIA Unified Memory kernel module
ii nvidia-opencl-icd-331 331.113-0ubuntu0.1 amd64 NVIDIA OpenCL ICD
ii nvidia-prime 0.6.7 amd64 Tools to enable NVIDIA's Prime
ii nvidia-settings 331.20-0ubuntu8 amd64 Tool for configuring the NVIDIA graphics driver

Ctrl-alt-F1 , ctrl-alt-f7 workaround unlocks things.

Tried changing /etc/default/grub to have

GRUB_CMDLINE_LINUX_DEFAULT="quiet splash rcutree.rcu_idle_gp_delay=1"

but it did not change the lockup.

In kern.log get

 kernel: [ 6891.094246] ACPI Warning: \_SB_.PCI0.PEGP.DGFX._DSM: Argument #4 type mismatch - Found [Buffer], ACPI requires [Package] (20140424/nsarguments-95)

If I run "nvidia-settings" and change "PRIME profiles" from

NVIDIA (Performance Mode)
to
Intel (Power Saving Mode)

then it stops the lock up

May be related to https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=763272 as I noticed that

With PRIME profile as NVIDIA you get (the below number is from memory - but the ON I know was set )
$ cat /proc/acpi/bbswitch
0000:01:00.0 ON

and it can't be changed as per bug https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=763272

Also with PRIME profile as Intel you get
$ cat /proc/acpi/bbswitch
0000:01:00.0 OFF