Reboot / Shutdown locked because of intel-microcode

[Lo-calm]

Hi there !
I need your help for a little problem with my linux mint ( cinnamon ) on my laptop ( MSI GS60 6QE )
Here is the problem :
On this laptop, i have the possibility to choose between my graphic card for performances or my intel graphics for energy saving with this panel :
http://hpics.li/f421924
But, there is a problem : When i want to reboot or shutdown my computer when intel graphics is selected, my computer stays locked on a black screen forever with a "_" on the right corner of my screen. And it's not the case with the graphics card selected instead !
Here, the driver :
http://hpics.li/9895a68

So, if you have a solution for this problem, or if you can help me to find one, i'll be really grateful !
Thank you

[rene]

Not a solution but a note: intel-microcode is not related; it's nothing to do with graphics, but with the possibility to through microcode patch your (Intel) CPU for flaws discovered after its release. It's usually not needed: generally nothing's needed, and even if it is, a current BIOS will do it for you already.

[rene]

You can by the way try specifying the reboot method; "reboot=acpi" or "reboot=efi" might be most promising. To do so, you can manually add the parameter to the kernel command line through the Grub boot menu, or you can add it to the GRUB_CMDLINE_LINUX_DEFAULT string in /etc/default/grub and run sudo update-grub.

[Lo-calm]

Hi Rene !
Thank for your help ! I tried to do what you said, but it doesn't solve my problem ! But now the screen is not black anymore

[Spearmint2]

what's xrandr in terminal show?

[rene]

But now the screen is not black anymore

Seeing as how it apparently did make some difference I'd also try reboot=pci -- but other than that I'll bow out; have no idea and basically wanted to comment only on that microcode thing...

[Lo-calm]

No problem rene ! thank you for your help ^^.

what's xrandr in terminal show?

Here the xrandr output !

Screen 0: minimum 8 x 8, current 1920 x 1080, maximum 32767 x 32767
eDP1 connected primary 1920x1080+0+0 (normal left inverted right x axis y axis) 344mm x 194mm
1920x1080 60.02*+ 59.93 47.99
1680x1050 59.95 59.88
1600x1024 60.17
1400x1050 59.98
1600x900 60.00
1280x1024 60.02
1440x900 59.89
1280x960 60.00
1368x768 60.00
1360x768 59.80 59.96
1152x864 60.00
1280x720 60.00
1024x768 60.00
1024x576 60.00
960x540 60.00
800x600 60.32 56.25
864x486 60.00
640x480 59.94
720x405 60.00
640x360 60.00
DP1 disconnected (normal left inverted right x axis y axis)
DP2 disconnected (normal left inverted right x axis y axis)
HDMI1 disconnected (normal left inverted right x axis y axis)
HDMI2 disconnected (normal left inverted right x axis y axis)
HDMI3 disconnected (normal left inverted right x axis y axis)
VIRTUAL1 disconnected (normal left inverted right x axis y axis)