[Lemmiwinks]

Originally Posted by kpl388

Thanks, Lemmiwinks. I'm having the exact problem you are describing, with the system hanging and showing a purple horizontal bar on return from standby. Just to be clear, you commented out these lines from /etc/grub.d/10_linux:

#      cat << EOF
#       gfxmode \$linux_gfx_mode
#EOF

and ran

sudo update-grub

- sound right?

Not quite, I just commented out gfxmode \$linux_gfx_mode in 10_linux, so:

      cat << EOF
#       gfxmode \$linux_gfx_mode
EOF

But maybe both work, should be safe to try out both of them, since editing the 10_linux file should not harm grub's functionality.

Then

sudo update-grub

, correct.

Maybe there is another possible solution you could try out first: there might be a problem with network-manager and the nvidia driver. Could you try to resume while network-manager is disabled?
Type

sudo service network-manager stop

and

sudo killall wpa_supplicant

in a gnome-terminal, then try to suspend and resume as often as possible.
Btw, does it also work for you with the nouveau drivers?