bbswitch :No discrete VGA device found

[yinan]

Hi，

My desktop works well this morning (Dell 8900, Ubuntu 15.04), but after I changed the display driver from Nvidia to another one. Then after restart, I cannot get to the log-in interface, the screen is stopped and giving the following information,

     Fsck from util-linux 2.26.2
     /dev/sda4: recovering journal
     /dev sda4: clean 856185/59973632 files, 28101441/239880448 blocks
     [OK] Started Light Display Manager
         Starting Network Manager Script Dispatcher Service…
     [OK] Started Network Manager Script Dispatcher Service.
     [OK] Started Detect the available GPUs and deal with any system changes.
         Started Light Display Manager…
     [26.789662] bbswitch : No discrete VGA device found
     [26.817663] bbswitch: No discrete VGA device found
     [28.553772] bbswitch: No discrete VGA device found
     [28.585774] bbswitch: No discrete VGA device found

I will be very appreciated if you can give any suggestions, Thank you so much in advance.

[yinan (cuiyinan)]

I have not solve this problem yet. When I check the display driver, it gives the information that "display unlccaimed"
If I use "ctrl+Alt+F2" it gives the information that "The system is running in low graphics mode". Is there anyone has any idea about it? Thank you !

[Launchpad Janitor (janitor)]

Status changed to 'Confirmed' because the bug affects multiple users.