I'm currently unable to use any of my virtual terminals on Ubuntu 16.04 (the ASCII consoles accessible with CTRL+ALT+F[1-6] or chvt; that is, /dev/tty[1-6]), but only intermittently. When I first boot up, I can access and use them as usual with no problems. However, eventually, they become essentially frozen; there's some pattern associated with suspending the laptop, but not reliably reproducibly. I can switch to a different virtual terminal, and I see the contents of /etc/issue at the top with my login prompt, but am unable to login or execute any commands. Strangely enough, the tty displayed is whatever the last virtual terminal I was in prior to suspend (e.g. pressing CTRL+ALT+F4 does send me to the virtual console, but it states ttyN instead, where N is whichever tty I used last).
This has made me think the issue is with my video driver not drawing the tty screen after suspend, but following the steps here has not solved my problem.
Things I have tried:
- Setting
GRUB_TERMINAL=consolein/etc/default/gruband runningupdate-grub - Setting
GRUB_CMDLINE_LINUX_DEFAULT="nomodeset"in/etc/default/grub(which breaks a bunch of other things in my graphical environment anyway) - Reconfiguring the console font and display with
sudo dpkg-reconfigure console-setup - Attempting to reset the consoles with
sudo dellocvt
People with NVIDIA video cards have reported similar problems, but I'm on a Thinkpad with an Intel graphics card, so that doesn't apply to me (although I've tried their solutions, unfortunately with no success). As mentioned I've tried adjusting GRUB_TERMINAL similarly without solving the issue.
My system:
Hardware: Lenovo Thinkpad X1 generation 3
$ lsb_release -d: Ubuntu 16.04.2 LTS
$ uname -ri: 4.4.0-62-generic x86_64
$ lspci | grep VGA: 00:02.0 VGA compatible controller: Intel Corporation Broadwell-U Integrated Graphics (rev 09)
Kernel driver: i915
Any suggestions?
