Can not switch back to external GPU after switching to built-in graphics

tuxedocomputers / tuxedo-control-center

A tool to help you control performance, energy, fan and comfort settings on TUXEDO laptops.

GNU General Public License v3.0

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Can not switch back to external GPU after switching to built-in graphics #85

Open roundoutandabout opened 3 years ago

roundoutandabout commented 3 years ago

Important Information

Laptop model: TUXEDO Book XP1610 TCC version: 1.0.11 Linux Distribution and Version: KDE neon 5.21 User Edition Window Manager and version: kwin 5.21.1 GPU driver and version: NVIDIA 460.39-0

Reproduction steps

Switch from external to built-in graphics in the tray menu
Reboot

Expected behavior

In the tray menu there is an option to switch back to dedicated (external) GPU

Actual behavior

In the tray menu there is no option to switch graphics anymore
To switch graphics back to dGPU, one needs to use prime-select nvidia

Additional information

Also when external GPU is in use, there is no option to switch to hybrid mode, only to built-in.

tuxedoxt commented 3 years ago

Hello,

could you execute

prime-supported /dev/null

and share the output here?

roundoutandabout commented 3 years ago

Hi @tuxedoxt , here:

$ prime-supported /dev/null
yes

linuxrecon commented 3 years ago

I can second that issue. Using prime-select as @roundoutandabout described in the first post, allows me to use the nvidia GPU again. After that I only have the option "Select built-in" over the TUXEDO Control Center again.

tuxedoxt commented 3 years ago

Hi @tuxedoxt , here:
$ prime-supported /dev/null
yes

Thanks. This was in prime-select nvidia+reboot mode?

If so please do it once again after reproducing the problem, that is, in prime-select intel+reboot mode.

roundoutandabout commented 3 years ago

If so please do it once again after reproducing the problem, that is, in prime-select intel+reboot mode.

After switching to intel + reboot, the command shows nothing.

tuxedoxt commented 3 years ago

Hmm ok seems to be a bug, possibly in the suse version of the prime package not recognizing prime supported configuration after switch.

Edit: Not sure why I wrote suse, KDE Neon you wrote in the OP

tuxedoxt commented 3 years ago

Ehm. please disregard accidental automatic close through commit.

I'll reopen during consideration of a suitable workaround.