I'm going to add my two cents of advice. I had the problem as well.
This is what I did to solve it.
1) in /etc/grub.d, I've added the line set gfxpayload=keep right after set
gfxmode=${GRUB_GFXMODE}
2) in /etc/default I've added the line GRUB_GFXMODE=1024x768
3) I ran update-grub, and the grub.cfg file in /boot/grub was changed correctly
After these modifications I got the same issues as meantioned here (blank
screen and no console output).
In /var/log/messages I've had these lines : Console: colour dummy device 80x25
and earlier without these changes it said : Console: colour VGA+ 80x25
After checking the /etc/modprobe.d directory, I've discovered a file named
blacklist-framebuffer.conf
I've commented all of these, and rebooted the computer.
Now I had the problem discribed by Vernon. It switched back to 80x30. With
lsmod I've discovered the kernel loaded the nvidiafb module. My guess was that
this module caused the change so I wanted the kernel to load the vesafb module
instead (nvidia is VESA compatible right)
So I blacklisted all modules in blacklist-framebuffer.conf again, except the
vesafb module. Rebooted the computer again, and now the kernel didn't load any
framebuffer modules.
I issued the command : sudo modprobe vesafb and checked the messages
logfile again and now a line was added like : Console: switching to
colour frame buffer device 128x48. I've checked the monitor on the
computer (I did this all with an ssh connection) and now the console was
displayed in 1024x768 mode.
To make all this work automatically I added vesafb in /etc/modules, and
now the kernel loads this module at startup.
So recap for those who want to solve it without hassle :
1) In /etc/grub.d, add the line set gfxpayload=keep right after set
gfxmode=${GRUB_GFXMODE}
2) In /etc/default, add the line GRUB_GFXMODE=1024x768
3) Run update-grub to change the grub.cfg file
4) uncomment the vesafb module in /etc/modprobe.d/blacklist-framebuffer.conf
5) add vesafb in /etc/modules
6) restart the computer
now the issue should be solved.
--
Unable to enable framebuffer modes with grub 2
https://bugs.launchpad.net/bugs/428519
You received this bug notification because you are a member of Ubuntu
Bugs, which is subscribed to Ubuntu.
--
ubuntu-bugs mailing list
ubuntu-bugs@lists.ubuntu.com
https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
