Ubuntu
mesa package

  1. Bug #1860754
  2. Comment #26

Comment 26 for bug 1860754

Revision history for this message
Hans de Goede (j-w-r-degoede) wrote :

I have a T100HAN in my personal hw collection, so I just booted up a nightly build of the Fedora 32 workstation livecd on it and that works fine for me. This nightly build is using a 5.6 kernel.

So the 5.6 kernel can work on this hardware. AFAIK Ubuntu, like Fedora puts the i915 driver in the initrd. I guess either a module is missing from the initrd, or there is a module loading ordering issue going on here. The T100HAN uses a Crystal Cove PMIC.

Here are the setting from a couple of relevant Kconfig options which Fedora uses:

CONFIG_INTEL_SOC_PMIC=y
CONFIG_PWM_CRC=y
CONFIG_GPIO_CRYSTAL_COVE=y
CONFIG_PMIC_OPREGION=y
CONFIG_BYTCRC_PMIC_OPREGION=y
CONFIG_CHTCRC_PMIC_OPREGION=y

Note these are all builtin for Fedora, perhaps you can do a test build of an Ubuntu kernel with the same settings?

Also can you attach, or email me the .config Ubuntu is using for building their kernels?