** Also affects: linux-oem (Ubuntu)
Importance: Undecided
Status: New
** Changed in: linux-oem (Ubuntu Bionic)
Status: New => Fix Committed
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https://bugs.launchpad.net/bugs/1760545
Title:
[18.04] GLK hang after a while
Status in linux package in Ubuntu:
In Progress
Status in linux-oem package in Ubuntu:
New
Status in linux source package in Bionic:
Fix Committed
Status in linux-oem source package in Bionic:
Fix Committed
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.
In addition to that, this also causes GLK's HDMI audio codec stops
working after S3.
[Fix]
Add a MODULE_FIRMWARE statement for the firmware.
This information is required to let initramfs-tools includes 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.
I can confirm the GLK HDMI audio issue is gone when firmware is
loaded.
[Regression Potential]
Minimal. Will only be loaded by i915 for specific hardware, and loading
the firmware is known to fix a hang.
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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.
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