A mainline patch is available now in v4.17-rc4. It is probably best to back port commit b607990c76ceda0a7a7ceacabab174cdc8b9beee for Ubuntu 4.15 and Ubuntu 4.16 (if released) as the mainline 'Cc: stable' tag is stalled.
The patch/commit fixes the bug as documented above: ubuntu@ubuntu:~$ dmesg | egrep 'Linux version|DMI:|i915' [ 0.000000] Linux version 4.17.0-041700rc4-generic (kernel@kathleen) (gcc version 7.3.0 (Ubuntu 7.3.0-16ubuntu3)) #201805070430 SMP Mon May 7 04:31:46 UTC 2018 [ 0.000000] DMI: Intel Corporation NUC7CJYS/NUC7JYB, BIOS JYGLKCPX.86A.0024.2017.1229.1454 12/29/2017 [ 2.489175] i915 0000:00:02.0: vgaarb: changed VGA decodes: olddecodes=io+mem,decodes=io+mem:owns=io+mem [ 2.489705] [drm] Finished loading DMC firmware i915/glk_dmc_ver1_04.bin (v1.4) [ 2.493790] [drm] Initialized i915 1.6.0 20180308 for 0000:00:02.0 on minor 0 [ 2.567821] i915 0000:00:02.0: fb0: inteldrmfb frame buffer device ubuntu@ubuntu:~$ -- You received this bug notification because you are a member of Kernel Packages, which is subscribed to linux in Ubuntu. https://bugs.launchpad.net/bugs/1760545 Title: [18.04] GLK hang after a while Status in intel: Incomplete Status in linux package in Ubuntu: In Progress Status in linux source package in Bionic: In Progress Bug description: SRU Justification Impact: i915 lacks information about the glk_dmc_ver1_04.bin firmware file in modinfo, so it is not included in the initrd along with the i915 driver. Thus the firmware does not get loaded. Loading the firmware is said to prevent a hang. Fix: Add a MODULE_FIRMWARE statement for the firmware. Test Case: Without the firmware there will be a "Direct firmware load for i915/glk_dmc_ver1_04.bin failed with error -2" line in dmesg. With the firmware there is no such message. Regression Potential: Minimal. Will only be loaded by i915 for specific hardware, and loading the firmware is known to fix a hang. --- Description: Platform information: Label: GLK02SDP Processor: Silver N5000 Bios: GELKRVPA.X64.0083.B30.1801162142 OS: Ubuntu 18.04 Kernel: 4.15.0-10-generic Details: Power on, and enter into the system; After a period, sometimes about 20 minutes, sometimes 1 hour, the machine will hang. We can only power it off manually, then power on to enter into OS again. To manage notifications about this bug go to: https://bugs.launchpad.net/intel/+bug/1760545/+subscriptions -- Mailing list: https://launchpad.net/~kernel-packages Post to : kernel-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~kernel-packages More help : https://help.launchpad.net/ListHelp