Bug 1309370 - Optimus laptop external monitor stop working with kernel 4.5
Optimus laptop external monitor stop working with kernel 4.5
Status: NEW
Product: Fedora
Classification: Fedora
Component: kernel (Show other bugs)
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Unspecified Unspecified
unspecified Severity unspecified
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Assigned To: Kernel Maintainer List
Fedora Extras Quality Assurance
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Reported: 2016-02-17 11:01 EST by Carlos Soriano
Modified: 2016-02-17 11:58 EST (History)
8 users (show)

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Description Carlos Soriano 2016-02-17 11:01:14 EST
Description of problem:

An external monitor was working fine using rawhide with kernel 4.3 on a optimus laptop with the external monitor output connected only to the nvidia card.

However with the kernel 4.5 in latest rawhide that stopped working.
xrandr doesn't detect the external monitor and it says that the HDMI is disconnected.
DRI_PRIME=1 glxgears works as expected.


Additional info:

The card is: GeForce GT 520M
OpenGL ES 3.0 Mesa 11.2.0-devel
Gallium 0.4 on NVD9
Comment 1 Justin M. Forbes 2016-02-17 11:36:48 EST
Can you please attach dmesg output from both the working and non working kernels?

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