bugGNU GRUB - Bugs: bug #47075, Selected item on list of boot...

 
 

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bug #47075: Selected item on list of boot choices not maintained in sync on dual monitors

Submitted by:  Charles Belov <charlesbelov>
Submitted on:  Fri 05 Feb 2016 09:08:37 PM UTC  
 
Category: User InterfaceSeverity: Major
Priority: 3 - LowItem Group: Software Error
Status: NonePrivacy: Public
Assigned to: NoneOriginator Name: CharlesBelov
Open/Closed: OpenRelease: 
Release: otherReproducibility: Every Time
Planned Release: 2.03+

Wed 02 Mar 2016 02:25:21 PM UTC, comment #4:

Sounds like one of the screens is showing from the second VRAM double-buffered image. Correctly solving this requires dual-screen support and especially parsing VESA dual-screen info. Not sure if at all possible and if so it will be a lot of code changes. Postponing to after 2.02.

Vladimir Serbinenko <phcoder>
Project Administrator
Tue 09 Feb 2016 09:24:28 PM UTC, comment #3:

As far as I can tell, there is a single graphics card supporting both monitors.

When I boot and log in to Windows, Control Panel > System > Device Manager > Display adapters shows only one item:

Intel (R) HD Graphics Family

This is as opposed to another computer I use, a workstation, which shows two items under that entry.

As for terminal_output, it returns:

Active output terminals:
gfxterm
Available output terminals:
console vga_text spkmodem serial_* serial mda_text cbmemc audio

Charles Belov <charlesbelov>
Sat 06 Feb 2016 06:10:07 AM UTC, comment #2:

Are bot monitors connected to the same card? What output drivers are used (terminal_output in grub cli)?

Andrei Borzenkov <arvidjaar>
Project Member
Fri 05 Feb 2016 09:11:27 PM UTC, comment #1:

Corrected:

Expected result: The two monitor contents are maintained in sync.

Acceptable alternate result: GNU GRUB only displays on one of the two monitors. The other monitor is blank or displays just the background color.

Charles Belov <charlesbelov>
Fri 05 Feb 2016 09:08:37 PM UTC, original submission:

When I boot to GNU GRUB on a dual-monitor Dell Optiplex 990, and it displays on both screens, then when I cursor to select the desired boot option, the apparently selected item differs between the two screens.

Expected result: Either the two monitor contents are maintained in sync

Acceptable alternate result: GNU GRUB only displays on one of the two monitors. The other monitor is blank or displays just the background color.

Details:

GNU GRUB 2.02-beta2-9ubuntu1.7
Dell Optiplex 990 with dual Dell monitors

Boot options:

Ubuntu
Advanced Options for Ubuntu
Memory test (memtest86+)
Memory test (memtest86+, serial console 115200)
Windows 7 (loader) (on /dev/sda1)

Default on boot is set to Windows 7 (loader) (on /dev/sda1).

Steps:

1. Restart computer
2. Wait for GNU GRUB to display

Actual and expected results: Both screen show selected as:
Windows 7 (loader) (on /dev/sda1)

3. Press up arrow key once

Actual and expected results:
Both screens show selected as:
Memory test (memtest86+, serial console 115200)

4. Press up arrow key once

Actual result:
Left screen shows selected as:
Memory test (memtest86+, serial console 115200)
Right screen shows selected as:
Memory test (memtest86+)

Expected result: Both screen show selected as:
Memory test (memtest86+)

5. Press up arrow key once

Actual and expected results:
Both screens show selected as:
Advanced Options for Ubuntu

6. Press up arrow key once

Actual result:
Left screen shows selected as:
Advanced Options for Ubuntu
Right screen shows selected as:
Ubuntu

Expected result:
Both screen show selected as:
Ubuntu

7. Press ENTER

Actual and expected result: Ubuntu launches

Charles Belov <charlesbelov>

 

No files currently attached

 

Depends on the following items: None found

Items that depend on this one: None found

 

Carbon-Copy List
  • -unavailable- added by phcoder (Posted a comment)
  • -unavailable- added by arvidjaar (Posted a comment)
  • -unavailable- added by charlesbelov (Submitted the item)
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    Follow 2 latest changes.

    Date Changed By Updated Field Previous Value => Replaced By
    Tue 11 Oct 2016 12:35:21 PM UTCphcoderPriority5 - Normal=>3 - Low
    Wed 02 Mar 2016 02:25:21 PM UTCphcoderPlanned ReleaseNone=>2.03+

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