[Bug 1247907] Re: Ubuntu booting into black console

[Thomas Schweikle]

> You should only be setting the GRUB_GFXMODE, not the vga=. Does it
work when you do that?

setting only GRUB_GFXMODE and GRUB_GFXPAYLOAD to the very same value does not work at all: Grub switches to 800x600, but the kernel will only use 640x480. I *have* to set "vga=" too! Maybe this is because some older kernel do not use "GFXMODE", but "vga"?
The newer kernel just *ignore* setting "vga=" but these kernel do *not* switch to what is expected by GFXMODE. They are ignoring both: "vga=" and "gfxmode="!
Some kernel in between tell me about "vga=" being deprecated and should not be used any more. Some honour this setting, some do not. It depends on distribution and how the kernel was compiled.

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https://bugs.launchpad.net/bugs/1247907

Title:
  Ubuntu booting into black console

Status in “grub2” package in Ubuntu:
  Incomplete

Bug description:
  Setting

  GRUB_CMDLINE_LINUX_DEFAULT="vga=0x340"
  GRUB_CMDLINE_LINUX=""

  and

  GRUB_GFXMODE=800x600
  GRUB_GFXPAYLOAD=800x600

  then executing "update-grub" or "update-grub2" leads to booting Ubuntu without console. The screen is black and stays this way. The system itself is running! It is possible to remotely log in using ssh.
  Grub switches to 800x600, after the kernel overtakes, it switches back to 640x480, but never to 800x600 again. I've tried various combinations even "keep", but without success.

  Switching to

  GRUB_CMDLINE_LINUX_DEFAULT=""
  GRUB_CMDLINE_LINUX=""

  and

  GRUB_GFXMODE=
  GRUB_GFXPAYLOAD=

  makes the console been shown again, but not at higher resolution.

  I could find this problem with:

  Ubuntu 12.10 (Quantal Quetzal)
  Ubuntu 13.04 (Raring Ringtail)
  Ubuntu 13.10 (Saucy Salamander)
  Ubuntu 14.04 (Trusty Tahr)

  ProblemType: Bug
  DistroRelease: Ubuntu 13.10
  Package: grub (not installed)
  ProcVersionSignature: Ubuntu 3.11.0-12.19-generic 3.11.3
  Uname: Linux 3.11.0-12-generic x86_64
  ApportVersion: 2.12.5-0ubuntu2.1
  Architecture: amd64
  Date: Mon Nov  4 18:01:55 2013
  InstallationDate: Installed on 2012-12-12 (327 days ago)
  InstallationMedia: Ubuntu-Server 12.04.1 LTS "Precise Pangolin" - Release amd64 (20120817.3)
  MarkForUpload: True
  ProcEnviron:
   TERM=screen-bce
   PATH=(custom, no user)
   XDG_RUNTIME_DIR=<set>
   LANG=de_DE.UTF-8
   SHELL=/bin/bash
  SourcePackage: grub
  UpgradeStatus: Upgraded to saucy on 2013-02-11 (265 days ago)

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