I’m using Ubuntu 14.10.
When I’m swichting from intel to nvidia and log off there is a black screen.
After rebooting the black screen is still there.
I have to go to a terminal session and switch back to intel and reboot.
I’m using the xorg-edgers PPA.
Latest driver: 340.76
Graphiccard: GT 630M
The nvidia graphics worked about 2 months ago or something like this. I
edit: Oh, you are using intel, either downgrade their driver, use “UXA” or opt to use modesetting driver.
I might look into SNA issue later and git bisect xf86-video-intel & report to chris willson (intel developer).
I believe I’m having a similar (if not the same) problem here.
Kubuntu 15.04, nvidia-346-updates. Black screen when trying to start X after prime-selecting nvidia, otherwise it works fine with prime-select intel.
Can you confirm if this is the same issue? And if it IS, do you have an update on your patches?
I would post my nvidia-bugreport here if I knew how to attach files. nvidia-bug-report.log.gz (192 KB)
First there are two problems to installing Ubuntu 14.04.04.
kernel version does not support intel skylake CPU.
To solve the first problem, I install linux-image-4.4.0-22.lowlatency and associated headers. You have to first go into text mode and use nomodeset kernel option to do so.
Nvidia problem of black screen during login.
As I wanted to use my MSI gaming laptop with for tensorflow, I install the cuda 7.5 and cuDNN v4. cuda 7.5 comes with nvidia-352 driver. Direct installation soon resulted into black screen during login.
To solve the problem, I start ubuntu in the new kernel 4.4 recovery mode and apt-get purge all xorg, xserver-xorg, purge lightdm.
Then install libcogl1 (for libcheese libcheese-gtk23 dependency)…