** Description changed: 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. + [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. + 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. + [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. + 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. --- 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.
-- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1760545 Title: [18.04] GLK hang after a while To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1760545/+subscriptions -- ubuntu-bugs mailing list [email protected] https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
