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LKirs
Beginner
1,628 Views

NUC6i7KYB DisplayPort, periodic screen blanking, occasional crash

For a while, using DisplayPort (and maybe HDMI, too) I have been experiencing periodic moments when the screen goes black, and then after a few seconds recovers.

Occasionally this will happen and the machine will crash and completely reboot.

This is running Ubuntu Linux Xen. See attached output of ssu program for details.

The log file is spewing stuff like this. Note the times! It's streaming dozens per second, mostly the Fault errors.

Dec 17 15:40:51 tesseract kernel: [ 5292.968233] [drm:gen8_irq_handler [i915]] *ERROR* Fault errors on pipe A: 0x00000080

Dec 17 15:40:51 tesseract kernel: [ 5292.984683] [drm:gen8_irq_handler [i915]] *ERROR* Fault errors on pipe A: 0x00000080

Dec 17 15:40:51 tesseract kernel: [ 5292.984774] [drm:gen8_irq_handler [i915]] *ERROR* Fault errors on pipe A: 0x00000080

Dec 17 15:40:51 tesseract gnome-shell[1890]: [AppIndicatorSupport-WARN] Attempting to re-register :1.68/org/ayatana/NotificationItem/multiload; resetting instead

Dec 17 15:40:51 tesseract gnome-shell[1890]: [AppIndicatorSupport-WARN] Item :1.68/org/ayatana/NotificationItem/multiload is already registered

Dec 17 15:40:51 tesseract gnome-shell[1890]: [AppIndicatorSupport-WARN] Attempting to re-register :1.68/org/ayatana/NotificationItem/multiload; resetting instead

Dec 17 15:40:51 tesseract gnome-shell[1890]: [AppIndicatorSupport-WARN] Item :1.68/org/ayatana/NotificationItem/multiload is already registered

Dec 17 15:40:51 tesseract kernel: [ 5293.001263] [drm:gen8_irq_handler [i915]] *ERROR* Fault errors on pipe A: 0x00000080

Dec 17 15:40:51 tesseract kernel: [ 5293.001289] [drm:gen8_irq_handler [i915]] *ERROR* Fault errors on pipe A: 0x00000080

Dec 17 15:40:51 tesseract kernel: [ 5293.018145] [drm:gen8_irq_handler [i915]] *ERROR* Fault errors on pipe A: 0x00000080

Dec 17 15:40:51 tesseract kernel: [ 5293.018221] [drm:gen8_irq_handler [i915]] *ERROR* Fault errors on pipe A: 0x00000080

Dec 17 15:40:51 tesseract kernel: [ 5293.034182] [drm:gen8_irq_handler [i915]] *ERROR* Fault errors on pipe A: 0x00000080

Dec 17 15:40:51 tesseract kernel: [ 5293.034198] [drm:gen8_irq_handler [i915]] *ERROR* Fault errors on pipe A: 0x00000080

...

The other thing which may or may not be related, is that the sound via display port is garbled and virtually unintelligible.

The monitor is a Samsung C27F591FDU, which has built-in speakers. I was able to listen to sound via the headphone jack on the NUC previously.

I think that was using the HDMI connection, or maybe when using a USB-C to HDMI adapter. It would be nice to get this fixed.

I think there must be some problem with the DisplayPort drivers.

Any help very much appreciated.

0 Kudos
7 Replies
LKirs
Beginner
163 Views

Note: I am running Ubuntu 17.10.

At some point I had updated from an earlier version of Ubuntu (maybe 17.04?).

I have the graphics update tool installed, and had previously installed the latest driver, hoping to fix the audio problem. (Did not help.)

https://01.org/linuxgraphics/downloads/intel-graphics-update-tool-linux-os-v2.0.2 https://01.org/linuxgraphics/downloads/intel-graphics-update-tool-linux-os-v2.0.2

Now I cannot run the graphics update tool, because it appears my system is not supported.

Any suggestions?

LKirs
Beginner
163 Views

LKirs
Beginner
163 Views

I was able to install the latest 2017Q3 update of the Intel graphics driver by bypassing the check (I temporarily set /etc/lsb-release back to 17.04).

Running the updater, I got

Added:

libosmesa6:amd64 (17.2.2-0ubuntu1)

Upgraded:

libcairo2:amd64 (from 1.15.4-0intel1 to 1.15.6-0intel1)

However, if the problem is due to the bug I commented on above, it is listed as a known bug with the current driver.

 

Also, I have tested the audio, and am still having the same problem.
idata
Community Manager
163 Views

Hi Liamk,

I understand you are getting issues with the screen randomly going blank. I am sorry for the inconvenience.

 

I was checking the list of compatible operating systems for the https://www.intel.com/content/www/us/en/support/articles/000005628/mini-pcs.html Intel® NUC6i7KYK, I do not see Linux* as part of the official supported OS.

 

My recommendation is to contact the Linux* distribution forums at https://ubuntuforums.org/ Ubuntu Forums for additional information about this issue.

Regards,

Allan J

LKirs
Beginner
163 Views

Allan,

That link redirects to this site (communities.intel.com) with the following message:

You are attempting to leave a secure area. This URL ' https://ubuntuforums.org/'. is not on Intel's approved white list of domains. If you believe this is a mistake please contact (mailto:Peterx.dulsky@intel.com Peterx.dulsky@intel.com).

LKirs
Beginner
163 Views

However, I will try to find help elsewhere.

MaryT_Intel
Community Manager
163 Views

Hi Liamk,

Sorry about the link not working, it's a security precaution. Please go ahead and paste the link in a separate window and it should work then. I apologize for the inconvenience.

Thanks,

Mary T.

Support Community Manager.

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