** Package changed: ubuntu => linux-signed-oem-5.4 (Ubuntu) -- You received this bug notification because you are a member of Kernel Packages, which is subscribed to linux-signed-oem-5.4 in Ubuntu. https://bugs.launchpad.net/bugs/1871713
Title: Backlight Brigthness not adjustable after install on Dell XPS 13 7390 Status in linux-signed-oem-5.4 package in Ubuntu: New Bug description: The Ubuntu 20.04 beta installer/live system does allow to adjust the screen brightness via the control commands and the interface at echo $value /sys/class/backlight/intel_backlight/brightness The action in the installer/live system does change the brightness appropriately. After performing the default install, most values for brightness does not reflect to actual_brightness. Example: echo 1 > /sys/class/backlight/intel_backlight/brightness echo `cat /sys/class/backlight/intel_backlight/max_brightness` > /sys/class/backlight/intel_backlight/brightness does not produce a difference. However, it does work in the live system/installier. The only difference after installation does happen on the following command: echo 0 > /sys/class/backlight/intel_backlight/brightness\\ which turns off the display. Is there any information that I can provide to debug this issue further? To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux-signed-oem-5.4/+bug/1871713/+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
