Random freezes (NOT delays) at shutdown

Support & Help Requests
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1

My machine sometimes freezes at shutdown with drm i915 errors such as these:

IMG_20160430_115912195_HDR_crop.jpg3536Ă—1240 1.59 MB

It does this with 4.2, 4.4, and 4.5 kernels but it happens the least on 4.2. This is an optimus machine and running bumblebee.

Any idea what might be wrong?

$ inxi -ACDMNSG gives the following:

System: Host: gazp7 Kernel: 4.2.0-35-generic x86_64 (64 bit)
Desktop: MATE 1.12.1 Distro: Ubuntu 16.04 xenial
Machine: System: CLEVO (portable) product: W251ESQ/W270ESQ
Mobo: CLEVO model: W251ESQ/W270ESQ
Bios: American Megatrends v: 4.6.5 date: 09/27/2012
CPU: Quad core Intel Core i7-3610QM (-HT-MCP-) cache: 6144 KB
clock speeds: max: 3300 MHz 1: 1391 MHz 2: 1314 MHz 3: 1295 MHz
4: 1499 MHz 5: 1319 MHz 6: 1231 MHz 7: 1261 MHz 8: 1501 MHz
Graphics: Card-1: Intel 3rd Gen Core processor Graphics Controller
Card-2: NVIDIA GF108M [GeForce GT 630M]
Display Server: X.Org 1.18.3 drivers: intel (unloaded: fbdev,vesa)
Resolution: [email protected]
GLX Renderer: Mesa DRI Intel Ivybridge Mobile
GLX Version: 3.0 Mesa 11.2.0
Audio: Card Intel 7 Series/C210 Series Family High Definition Audio Controller
driver: snd_hda_intel
Sound: Advanced Linux Sound Architecture v: k4.2.0-35-generic
Network: Card-1: Qualcomm Atheros AR93xx Wireless Network Adapter
driver: ath9k
Card-2: Realtek RTL8111/8168/8411 PCI Express Gigabit Ethernet Controller
driver: r8169
Drives: HDD Total Size: 128.0GB (37.0% used)
ID-1: /dev/sda model: M4 size: 128.0GB

2

And I should mention this is a new problem since I upgraded from 15.10 to 16.04.

3

Hi @randomdave,

do you have “bumblebee-nvidia primus” installed?. :smiley:

See also:

https://wiki.ubuntu.com/Bumblebee

4

Yes.

don@gazp7:~$ sudo aptitude versions bumblebee-nvidia primus
[sudo] password for don:
Package bumblebee-nvidia:
i 3.2.1-10 xenial 500

Package bumblebee-nvidia:i386:
p 3.2.1-10 xenial 500

Package primus:
i 0~20150328-1 xenial 500

5

Have you done a full system update since writing?:

6

you may want to have a look at this page

7

The full system update didn’t help. I still get the i915 errors and even the occasional kernel panic at shutdown.

As a test I decided to remove bumblebee and the Nvidia drivers completely, leaving just the bbswitch module set to turn off the Nvidia hardware at boot for power savings. I also blacklisted the Nouveau driver.

Now the system shuts down cleanly every time, but of course the faster graphics is not available.

I think its likely a problem with bumblebee. No big deal but it was nice to have the option in 15.10.

8

Thanks to you both for your help.

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