Stuck on an issue?

Lightrun Answers was designed to reduce the constant googling that comes with debugging 3rd party libraries. It collects links to all the places you might be looking at while hunting down a tough bug.

And, if you’re still stuck at the end, we’re happy to hop on a call to see how we can help out.

Nouveau doesn't disables nvidia, bbswitch gives black screen on intel

See original GitHub issue

Description When I use default switching mode and switch to intel, nvidia gpu seems to be still running. But when I set switching to bbswitch as its described in FAQ and reboot I’ve got black screen. I was trying to fix that by blacklisting nouveau and adding acpi_osi=! acpi_osi='Windows 2009' pcie_port_pm=off but the result was the same. In both cases nvidia mode works.

System info

Distro: Anarchy linux
Desktop manager: XFCE4
Display manager: LightDM
Laptop: HP Pavilion Power 15 (15-bc402nw)

Logs https://pastebin.com/4Fs9EuL8 There is some error at 104 line, but description isn’t useful.

Issue Analytics

State:
Created 4 years ago
Comments:6 (2 by maintainers)

Top GitHub Comments

1reaction

Askannzcommented, Jun 7, 2019

Yeah, unfortunately GPU power switching on Linux is giant mess because of manufacturers not agreeing on anything. If you have already tried both nouveau and bbswitch, there is not much else I can suggest besides trying every solution from here, or google your laptop model and see if there is a way to enable switching.

0reactions

Askannzcommented, Oct 20, 2019

Closing this issue because it’s unfortunately very model-specific and I can’t implement an universal fix.

Since v1.2 there has been some changes to the power management code that might mitigate the issue, and I also wrote a guide on how to choose the parameters that work best for you. Please refer to that.