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I'm having an issue with my Ubuntu Server 16.04 installation. I have it running on a Zotac Z-Box CI23 Nano. It installed fine, but on its first boot all I had was a blank screen. I edited /etc/default/grub and changed GRUB_CMDLINE_LINUX_DEFAULT="nomodeset"

This let me see the startup, but the text is all garbled white blocks:

screenshot

I first thought it might be a bad cable, so I switched cables with no change. I changed monitors with no effect. I switched to a TV using HDMI with no effect.

Any ideas would appreciated.

migrated from serverfault.com Aug 21 '16 at 8:54

This question came from our site for system and network administrators.

  • I would reinstall, but seem a incompability with your box. – yagmoth555 Aug 19 '16 at 18:07
  • Compare unix.stackexchange.com/q/289979/5132 , which has a similar appearance. – JdeBP Aug 21 '16 at 12:14
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I finally got this figured out. At first I thought it was bad hardware so I RMA'd the machine. The same exact thing was happening on the replacement. So I spent a few hours fiddling with grub settings. This is what ended up working for this machine:

in /etc/default/grub:

Comment out GRUB_CMDLINE_LINUX_DEFAULT="splash quiet" entirely. Uncomment GRUB_TERMINAL=console

Uncomment GRUB_GFXMODE=640x480 I set it to GRUB_GFXMODE=1280x800 because that's the monitor I'm using's default.

Save it then sudo update-grub and reboot and it is showing as expected. Only the combination of those three changes seem to make it work for me, but YMMV.

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