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[bug #54306] Incorrect resolution used on grub boot menu
From: |
Famine Badger |
Subject: |
[bug #54306] Incorrect resolution used on grub boot menu |
Date: |
Fri, 13 Jul 2018 09:47:20 -0400 (EDT) |
User-agent: |
Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/67.0.3396.99 Safari/537.36 |
URL:
<http://savannah.gnu.org/bugs/?54306>
Summary: Incorrect resolution used on grub boot menu
Project: GNU GRUB
Submitted by: faminebadger
Submitted on: 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:
Originator Email:
Open/Closed: Open
Discussion Lock: Any
Release:
Release: 2.02
Reproducibility: Every Time
Planned Release: None
_______________________________________________________
Details:
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:
address@hidden ~ (0) $ lspci |grep VGA
01:00.0 VGA compatible controller: Advanced Micro Devices, Inc. [AMD/ATI]
Tahiti XT [Radeon HD 7970/8970 OEM / R9 280X]
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:
address@hidden ~ (0) $ xrandr
Screen 0: minimum 320 x 200, current 5760 x 1200, maximum 16384 x 16384
DisplayPort-0 connected 1920x1200+0+0 (normal left inverted right x axis y
axis) 546mm x 352mm
1920x1200 59.95*+
1920x1080 60.00 50.00 59.94 59.99
1920x1080i 60.00 50.00 59.94
1600x1200 60.00
1680x1050 59.95
1280x1024 75.02 60.02
1440x900 59.89
1280x960 60.00
1366x768 59.79
1152x864 75.00
1280x720 60.00 50.00 59.94
1024x768 75.03 70.07 60.00
832x624 74.55
800x600 72.19 75.00 60.32 56.25
720x576 50.00
720x480 60.00 59.94
640x480 75.00 72.81 66.67 60.00 59.94
720x400 70.08
DisplayPort-1 connected 1920x1200+1920+0 (normal left inverted right x axis y
axis) 546mm x 352mm
1920x1200 59.95*+
1920x1080 60.00 50.00 59.94 59.99
1920x1080i 60.00 50.00 59.94
1600x1200 60.00
1680x1050 59.95
1280x1024 75.02 60.02
1440x900 59.89
1280x960 60.00
1366x768 59.79
1152x864 75.00
1280x720 60.00 50.00 59.94
1024x768 75.03 70.07 60.00
832x624 74.55
800x600 72.19 75.00 60.32 56.25
720x576 50.00
720x480 60.00 59.94
640x480 75.00 72.81 66.67 60.00 59.94
720x400 70.08
HDMI-0 connected 1920x1080+3840+0 (normal left inverted right x axis y axis)
1600mm x 900mm
1920x1080 60.00*+ 50.00 59.94 24.00 23.98
1920x1080i 60.00 50.00 59.94
2880x576 50.00
2880x576i 50.00
2880x480 60.00 59.94
2880x480i 60.00 59.94
1280x1024 60.02
1280x720 60.00 50.00 59.94
1440x576 50.00
1024x768 60.00
1440x480 60.00 59.94
800x600 60.32
720x576 50.00
720x576i 50.00
720x480 60.00 59.94
720x480i 60.00 59.94
640x480 60.00 59.94
DVI-0 disconnected (normal left inverted right x axis y axis)
address@hidden ~ (0) $
I've attached my grub.cfg in case anyone can spot anything extra/missing in
there.
_______________________________________________________
File Attachments:
-------------------------------------------------------
Date: Fri 13 Jul 2018 01:47:19 PM UTC Name: 20180713_124454.jpg Size: 470KiB
By: faminebadger
<http://savannah.gnu.org/bugs/download.php?file_id=44550>
-------------------------------------------------------
Date: Fri 13 Jul 2018 01:47:19 PM UTC Name: 20180713_124619.jpg Size: 311KiB
By: faminebadger
<http://savannah.gnu.org/bugs/download.php?file_id=44551>
-------------------------------------------------------
Date: Fri 13 Jul 2018 01:47:19 PM UTC Name: 20180713_143414.jpg Size: 595KiB
By: faminebadger
<http://savannah.gnu.org/bugs/download.php?file_id=44552>
-------------------------------------------------------
Date: Fri 13 Jul 2018 01:47:17 PM UTC Name: grub.cfg Size: 17KiB By:
faminebadger
<http://savannah.gnu.org/bugs/download.php?file_id=44549>
_______________________________________________________
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