Arch Linux

gim

Member

Registered: 2013-07-27

Posts: 35

Bluetooth and GT750M is not working after suspending to RAM.

Hello! I am yet another lucky owner of laptop with optimus Intel+nVidia technology. I had really frustrating issue with Bumblebee because my nvidia just randomly refused to change power state in the past, luckly after a few months someone added workaround to the Bumblebee's troubleshooting section on ArchWiki and it worked flawlessly for a while. But now, most likely because of some kernel updates, I'm experiencing similar issue with both Bluetooth and nvidia card but this time only after suspending to RAM.

% optirun glxgears
[12125.501131] [ERROR]Cannot access secondary GPU - error: Could not enable discrete graphics card
[12125.501173] [ERROR]Aborting because fallback start is disabled.

% bluetooth
bluetooth = on
% bluetoothctl
[bluetooth]# devices
[bluetooth]# power on
No default controller available
[bluetooth]# 

Some relevant outputs:

% dmesg | grep -i bluetooth
[    5.827610] Bluetooth: Core ver 2.19
[    5.827633] Bluetooth: HCI device and connection manager initialized
[    5.827641] Bluetooth: HCI socket layer initialized
[    5.827643] Bluetooth: L2CAP socket layer initialized
[    5.827649] Bluetooth: SCO socket layer initialized
[    9.006994] Bluetooth: BNEP (Ethernet Emulation) ver 1.3
[    9.007003] Bluetooth: BNEP socket layer initialized
[10940.998460] Bluetooth: Error in firmware loading err = -110,len = 448, size = 4096
[10940.998468] Bluetooth: Loading patch file failed

[10940.851853] wlp4s0: associated
[10940.998460] Bluetooth: Error in firmware loading err = -110,len = 448, size = 4096
[10940.998468] Bluetooth: Loading patch file failed
[10940.998475] ath3k: probe of 1-4:1.0 failed with error -110
[11094.380198] mce: [Hardware Error]: Machine check events logged

dmesg messages after the "optirun glxgears":

[12118.593906] bbswitch: enabling discrete graphics
[12118.604058] pci 0000:01:00.0: Refused to change power state, currently in D3

Any ideas what's going on? Thank you!