Thanks Petr, I have added your suggestion to the Wiki Tips and Trick page https://wiki.trinitydesktop.org/Tips_And_Tricks#Troubleshooting Cheers Michele On 2023/05/12 09:50 PM, Petr Palacký via tde-users wrote:
Hi all, for everyone who has the same problem with setting the display brightness with the nvidia driver (in my case "390 legacy"), I found the following solution to "revive" the display brightness: In "/etc/default/grub" add "acpi_backlight=vendor" and/or "nvidia.NVreg_EnableBacklightHandler=1" to the variable GRUB_CMDLINE_LINUX_DEFAULT: GRUB_CMDLINE_LINUX_DEFAULT="quiet nvidia.NVreg_EnableBacklightHandler=1 acpi_backlight=vendor". ... and reboot. With this setting, controlling the display brightness using TDE and multimedia (or Fn combination) keys should work (works for me). Cheers -- Petr PalackyOn Friday 12 of May 2023 09:58:30 Petr Palacký via tde-users wrote:Hi Michele, So everything is completely different in the end. I've done a bunch of tests and installs and the only problem is the Nvidia 390 legacy drivers. If I use the nouveau drivers on my existing installation, the brightness can be controlled without any problems, but when I use the official nvidia (390 legacy) drivers, the brightness cannot be controlled. So it's definitely not a TDE problem. It's a problem of nvidia drivers. I apologize for the confusion. I didn't think of this at all during the inquiry. Cheers -- Petr Palacky
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