** Description changed: [Impact] + dell_laptop created a non-working backlight driver before nvidia is loaded, that leads to the system can't adjust the display brightness. + + [Fix] + The patch prevents platform driver(dell_laptop) from creating backlight driver after win8. + https://patchwork.kernel.org/project/linux-acpi/patch/20230608091258.7963-1-hdego...@redhat.com/ [Test] - - [Verify] + Verified on the dell platform which reports this issue. [Where problems could occur] + The assumption of the backlight control is that after win8 all laptops backlight are controlled by either ACPI or native graphic driver. It impact the laptops that do not follow the assumption and will lead to broken backlight interface.
-- You received this bug notification because you are a member of Kernel Packages, which is subscribed to linux-oem-6.0 in Ubuntu. https://bugs.launchpad.net/bugs/2023638 Title: Stop trying to use vendor backlight control on laptops Status in HWE Next: New Status in linux package in Ubuntu: In Progress Status in linux-oem-6.0 package in Ubuntu: Invalid Status in linux-oem-6.1 package in Ubuntu: Invalid Status in linux source package in Jammy: In Progress Status in linux-oem-6.0 source package in Jammy: In Progress Status in linux-oem-6.1 source package in Jammy: In Progress Status in linux source package in Kinetic: In Progress Status in linux-oem-6.0 source package in Kinetic: Invalid Status in linux-oem-6.1 source package in Kinetic: Invalid Status in linux source package in Lunar: In Progress Status in linux-oem-6.0 source package in Lunar: Invalid Status in linux-oem-6.1 source package in Lunar: Invalid Status in linux source package in Mantic: In Progress Status in linux-oem-6.0 source package in Mantic: Invalid Status in linux-oem-6.1 source package in Mantic: Invalid Bug description: [Impact] dell_laptop created a non-working backlight driver before nvidia is loaded, that leads to the system can't adjust the display brightness. [Fix] The patch prevents platform driver(dell_laptop) from creating backlight driver after win8. https://patchwork.kernel.org/project/linux-acpi/patch/20230608091258.7963-1-hdego...@redhat.com/ [Test] Verified on the dell platform which reports this issue. [Where problems could occur] The assumption of the backlight control is that after win8 all laptops backlight are controlled by either ACPI or native graphic driver. It impact the laptops that do not follow the assumption and will lead to broken backlight interface. To manage notifications about this bug go to: https://bugs.launchpad.net/hwe-next/+bug/2023638/+subscriptions -- Mailing list: https://launchpad.net/~kernel-packages Post to : kernel-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~kernel-packages More help : https://help.launchpad.net/ListHelp
