GNU GRUB - Bugs: bug #54306, Incorrect resolution used on grub...
You are not allowed to post comments on this tracker with your current authentication level.
bug #54306: Incorrect resolution used on grub boot menu
Submitter: | Famine Badger <faminebadger> | ||
Submitted: | Fri 13 Jul 2018 01:47:17 PM UTC | ||
Category: | Booting | Severity: | Major |
Priority: | 5 - Normal | Item Group: | None |
Status: | None | Privacy: | Public |
Assigned to: | None | Originator Name: | |
Open/Closed: | Open | Release: | 2.02 |
Release: | Reproducibility: | Every Time | |
Planned Release: | None |
Attached Files
Depends on the following items: None found
Items that depend on this one: None found
Carbon-Copy List
There are 0 votes so far. Votes easily highlight which items people would like to see resolved in priority, independently of the priority of the item set by tracker managers.
Follow 4 latest changes.
Date | Changed by | Updated Field | Previous Value | => | Replaced by |
---|---|---|---|---|---|
2018-07-13 | faminebadger | Attached File | - | Added grub.cfg, #44549 | |
Attached File | - | Added 20180713_124454.jpg, #44550 | |||
Attached File | - | Added 20180713_124619.jpg, #44551 | |||
Attached File | - | Added 20180713_143414.jpg, #44552 |
Powered by Savane 3.13-3230.
Corresponding source code
Except very rarely, every time I cold boot or warm reset my linux machine, grub fails to set the resolution correctly on my monitors.
I have it set to 1920x1200 (note 16:10) in /etc/defaults/grub, which does find its way into the config file - and grub does claim to both detect support for and to use 1920x1200, but the monitors actually end up on 1152x864 with most of the bottom/right of the screen not visible as it's off the edge of the monitor.
The attached screenshots show:
1) The boot menu as I see it;
2) The monitor's OSD showing the actual resolution is 1152x864;
3) The output of videoinfo showing grub thinks the resolution is 1920x1200 on the list of supported modes.
Something is not getting set up correctly by grub - note the linux kernel has no problem setting the correct resolution during its own boot.
I've also attached my grub.cfg file to show what I believe to be the correct options being set (gfxmode=1920x1200 and terminal_output=gfxterm).
For reference, my hardware is a Radeon HD7970:
And my monitors are dual Asus PA248Q monitors (native 1920x1200) plugged in to two mini display port connectors on the gfx card. Furthermore, I have a Sony Bravia television additionally plugged in to the HDMI port which I used as a third screen for e.g. viewing movies. This is 16:9, and uses 1920x1080.
So:
- I've tried both 1920x1200 and 1920x1080 (given the tv doesn't support the former, but the monitors do support the latter) - both settings have the same problem.
- It doesn't matter whether the tv is on or off (it's normally off).
Here's the xrandr output for the running linux kernel:
I've attached my grub.cfg in case anyone can spot anything extra/missing in there.