Failure after HDMI hotplug on Apollo Lake/Gemini Lake in recent kernels
by Andypoo from LinuxQuestions.org on (#5S2X4)
I'm trying to track down an issue at the moment which has regressed at some point, so that if you unplug the HDMI and replug on some Intel Apollo Lake/Gemini Lake (GLK) chipsets, you lose video, and the kernel also does not shutdown correctly afterwards.
If you had X running, it freezes at the moment you disconnect HDMI.
dmesg does not show anything at the moment of disconnecting or reconnecting HDMI.
kernel-generic-5.4.84 together with kernel-firmware-20201130_7455a36 I have confirmed as working correctly, and I'm now jumping through the kernels to find where the regression has occured.
Will update the thread. If anybody else has any info, feel free to jump in.
Testing status:
5.4.84 / 20201130_7455a36 - OK
5.4.84 / 20201218_646f159 - OK
5.10.1 / 20201218_646f159 - BROKEN
5.10.17 / 20210211_f7915a0 - BROKEN
5.10.41 / 20210518_f846292 - BROKEN
5.15.2 / 20211115_f5d5195 - BROKEN
If you had X running, it freezes at the moment you disconnect HDMI.
dmesg does not show anything at the moment of disconnecting or reconnecting HDMI.
kernel-generic-5.4.84 together with kernel-firmware-20201130_7455a36 I have confirmed as working correctly, and I'm now jumping through the kernels to find where the regression has occured.
Will update the thread. If anybody else has any info, feel free to jump in.
Testing status:
5.4.84 / 20201130_7455a36 - OK
5.4.84 / 20201218_646f159 - OK
5.10.1 / 20201218_646f159 - BROKEN
5.10.17 / 20210211_f7915a0 - BROKEN
5.10.41 / 20210518_f846292 - BROKEN
5.15.2 / 20211115_f5d5195 - BROKEN