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Bug 613338

Summary: sys-power/bbswitch with x11-drivers/nvidia-drivers is not compatible with kernel PCI Express power management
Product: Gentoo Linux Reporter: Stefano <raistlin>
Component: Current packagesAssignee: Adam Feldman <np-hardass>
Status: UNCONFIRMED ---    
Severity: normal CC: mva, np-hardass, pacho, proxy-maint, rei4dan, soap
Priority: Normal Keywords: NeedPatch, UPSTREAM
Version: unspecified   
Hardware: All   
OS: Linux   
Package list:
Runtime testing required: ---

Description Stefano 2017-03-20 18:48:25 UTC
As detailed here:

and here:

kernel >3.6.8 added pcie_port_pm that is incompatible with bumblebee.

The workaround is to disable PCI Express power management at boot, passing pcie_port_pm=off, but that's hardly a solution.
Comment 1 Pacho Ramos gentoo-dev 2020-05-31 13:45:27 UTC
Per upstream bug it seems a bbswitch bug
Comment 2 Stefano 2021-04-17 08:14:28 UTC
Still true as of bumblebee 3.2.1_p20210112-r4