Public bug reported: Hello!
I found that current build config for Linux 5.9 and 5.10 in mainline PPA break brightness adjustment on Linux Miix2 8 tablet. Brightness can not be adjusted and doesn't turn off during suspend. Relevant build options: CONFIG_I2C_DESIGNWARE_PLATFORM CONFIG_INTEL_SOC_PMIC CONFIG_GPIO_CRYSTAL_COVE CONFIG_PWM_CRC CONFIG_PMIC_OPREGION CONFIG-BYTCRC_PMIC_OPREGION, When all these build options is set to y I can no longer reproduce this issue. I also think that enabling other related PMIC_OPREGION build options could help other BayTrail/CherryTrail-based devices as well: CONFIG_CHTCRC_PMIC_OPREGION=y CONFIG_XPOWER_PMIC_OPREGION=y CONFIG_BXT_WC_PMIC_OPREGION=y CONFIG_CHT_WC_PMIC_OPREGION=y CONFIG_CHT_DC_TI_PMIC_OPREGION=y ** Affects: linux (Ubuntu) Importance: Undecided Status: New -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1907647 Title: Linux 5.9/5.10 build config break brightness adjustment on Lenovo Miix2 8 To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1907647/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs