#StackBounty: #display #resolution #xorg #xrandr #modeline An attempt to switch to a doublescan X11 modeline fails with "Configure…

Bounty: 50

I have a modern 1920x1200 LED display, capable of up to 96 kHz HorizSync, up to 76 Hz VertRefresh, and up to 205 MHz pixel clock.

Apart from its native resolution, the display can also run in 1600x1200 (4:3) resolution at 75 Hz:

  1600x1200 (0xa1) 202.500MHz +HSync +VSync
        h: width  1600 start 1664 end 1856 total 2160 skew    0 clock  93.75KHz
        v: height 1200 start 1201 end 1204 total 1250           clock  75.00Hz

Now, I’m trying to switch it to a 800x600 doublescan mode equivalent to the above 1600x1200 mode (at 75 Hz, too; all modelines taken from here):

xrandr --newmode "800x600d" 101.25 800 832 928 1080 600 600 602 625 DoubleScan +HSync +VSync
xrandr --addmode DP1 800x600d

The resulting video mode gets added successfully and is clearly visible in the output of xrandr:

  800x600d (0x1f7) 101.250MHz +HSync +VSync DoubleScan
        h: width   800 start  832 end  928 total 1080 skew    0 clock  93.75KHz
        v: height  600 start  600 end  602 total  625           clock  75.00Hz

But once I attempt to switch to the new mode, I immediately receive an error:

# Mode by name
$ xrandr --output DP1 --mode 800x600d
xrandr: cannot find mode 800x600d

# Mode by id
$ xrandr --output DP1 --mode 0x1f7
xrandr: Configure crtc 0 failed

Are modern graphics cards no longer able to run in a doublescan mode?
Or should I blame my display?


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#StackBounty: #unity #resolution #screen #screen-management Get all supported resolutions for a monitor

Bounty: 50

I’ve been receiving complaints from users that my game doesn’t support the 16:10 aspect ratio.

Currently I list everything in Screen.resolutions in a dropdown and allow the user to pick from that. I have since come to the understanding that the first element is not necessarily the native resolution of the monitor.

I’ve found the Display class but this appears to only give the native resolution, not all scaled resolutions. E.g. if the monitor is 1920×1080 then I need a list of 1600×900, 1280×720, 640×360 etc.

I thought about just multiplying by some scale factor but then I’m afraid I’ll get something obscure like 885×497.8. And if I have a pre determined list of resolutions for a specific aspect ratio, how do I support obscure aspect ratios like widescreen for example.


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#StackBounty: #windows-10 #graphics-card #display #multiple-monitors #resolution Win10 display settings 'Duplicate mode' interf…

Bounty: 50

I am gamer/programmer on Windows 10 64 bit Pro edition who plays/works at 1920 x 1080 resolution with the need to minimize my game to get to windows which is running at the same resolution. I am using 2 insignia monitors in ‘Duplicate’ mode with a GTX 970 Nvidia Graphics GPU

The issue I am having is that my monitors are receiving a resolution switch signal each time I make the switch from game to desktop or vice versa, despite that the game is played in 1080p and that the desktop resolution is also 1080p.

To understand this further you should understand that when I normally change resolutions in Windows, my TV produces an OSD showing which resolution is in effect. While this is considered normal behavior for the TVs that I am using while switching resolutions are waking from sleep, it is not normal when the resolution is not actually changing and that the devices are already on. Here is a shot of the OSD that pops up when I switch to game in the same resolution as the desktop:

enter image description here

After doing some testing I came to realize that the issue does not happen on either monitor when only one monitor is selected in the display settings (either when PC screen Only or Secondary screen only are selected). If Duplicate mode is enabled the issue is persistent.

enter image description here

So what I would like to understand (and correct if possible), is how Windows 10 and my GPU are handling the different monitor setups. There must be some technical explanation for why my hardware (monitors) are behaving differently in these different Windows monitor modes.
I would like to keep Duplicate mode enabled so I dont have to constantly switch between setups to accommodate this issue.


Get this bounty!!!

#StackBounty: #windows-10 #graphics-card #display #multiple-monitors #resolution Win10 display settings 'Duplicate mode' interf…

Bounty: 50

I am gamer/programmer on Windows 10 64 bit Pro edition who plays/works at 1920 x 1080 resolution with the need to minimize my game to get to windows which is running at the same resolution. I am using 2 insignia monitors in ‘Duplicate’ mode with a GTX 970 Nvidia Graphics GPU

The issue I am having is that my monitors are receiving a resolution switch signal each time I make the switch from game to desktop or vice versa, despite that the game is played in 1080p and that the desktop resolution is also 1080p.

To understand this further you should understand that when I normally change resolutions in Windows, my TV produces an OSD showing which resolution is in effect. While this is considered normal behavior for the TVs that I am using while switching resolutions are waking from sleep, it is not normal when the resolution is not actually changing and that the devices are already on. Here is a shot of the OSD that pops up when I switch to game in the same resolution as the desktop:

enter image description here

After doing some testing I came to realize that the issue does not happen on either monitor when only one monitor is selected in the display settings (either when PC screen Only or Secondary screen only are selected). If Duplicate mode is enabled the issue is persistent.

enter image description here

So what I would like to understand (and correct if possible), is how Windows 10 and my GPU are handling the different monitor setups. There must be some technical explanation for why my hardware (monitors) are behaving differently in these different Windows monitor modes.
I would like to keep Duplicate mode enabled so I dont have to constantly switch between setups to accommodate this issue.


Get this bounty!!!

#StackBounty: #windows-10 #graphics-card #display #multiple-monitors #resolution Win10 display settings 'Duplicate mode' interf…

Bounty: 50

I am gamer/programmer on Windows 10 64 bit Pro edition who plays/works at 1920 x 1080 resolution with the need to minimize my game to get to windows which is running at the same resolution. I am using 2 insignia monitors in ‘Duplicate’ mode with a GTX 970 Nvidia Graphics GPU

The issue I am having is that my monitors are receiving a resolution switch signal each time I make the switch from game to desktop or vice versa, despite that the game is played in 1080p and that the desktop resolution is also 1080p.

To understand this further you should understand that when I normally change resolutions in Windows, my TV produces an OSD showing which resolution is in effect. While this is considered normal behavior for the TVs that I am using while switching resolutions are waking from sleep, it is not normal when the resolution is not actually changing and that the devices are already on. Here is a shot of the OSD that pops up when I switch to game in the same resolution as the desktop:

enter image description here

After doing some testing I came to realize that the issue does not happen on either monitor when only one monitor is selected in the display settings (either when PC screen Only or Secondary screen only are selected). If Duplicate mode is enabled the issue is persistent.

enter image description here

So what I would like to understand (and correct if possible), is how Windows 10 and my GPU are handling the different monitor setups. There must be some technical explanation for why my hardware (monitors) are behaving differently in these different Windows monitor modes.
I would like to keep Duplicate mode enabled so I dont have to constantly switch between setups to accommodate this issue.


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#StackBounty: #windows-xp #resolution #nvidia-graphics-card #console #ntvdm Console and NTVDM resolution upscaling in full-screen

Bounty: 50

When running either console Windows applications (such as Far Manager) or legacy DOS applications via NTVDM in the full-screen mode, I observe my Nvidia graphics driver upscaling the display resolution to that of my Windows desktop (1600x1200).

For DOS applications, this can be remedied by switching desktop resolution to the application resolution (provided it is at least 640x480) before running the application.

This doesn’t work for console applications, however, since a 9x16 font at 80x25 char cells yields a non-standard resolution of 720x400, and obviously I can’t set my desktop to that (despite it has been supported by most displays for ages).

The problem is specific to Windows XP (and maybe to some extent Vista), as Windows 7 and above no longer supports full-screen mode for console applications.

How can I entirely disable upscaling for my graphics card driver?


Get this bounty!!!

#StackBounty: #windows-10 #graphics-card #display #multiple-monitors #resolution Win10 display settings 'Duplicate mode' interf…

Bounty: 50

I am gamer/programmer on Windows 10 64 bit Pro edition who plays/works at 1920 x 1080 resolution with the need to minimize my game to get to windows which is running at the same resolution. I am using 2 insignia monitors in ‘Duplicate’ mode with a GTX 970 Nvidia Graphics GPU

The issue I am having is that my monitors are receiving a resolution switch signal each time I make the switch from game to desktop or vice versa, despite that the game is played in 1080p and that the desktop resolution is also 1080p.

To understand this further you should understand that when I normally change resolutions in Windows, my TV produces an OSD showing which resolution is in effect. While this is considered normal behavior for the TVs that I am using while switching resolutions are waking from sleep, it is not normal when the resolution is not actually changing and that the devices are already on. Here is a shot of the OSD that pops up when I switch to game in the same resolution as the desktop:

enter image description here

After doing some testing I came to realize that the issue does not happen on either monitor when only one monitor is selected in the display settings (either when PC screen Only or Secondary screen only are selected). If Duplicate mode is enabled the issue is persistent.

enter image description here

So what I would like to understand (and correct if possible), is how Windows 10 and my GPU are handling the different monitor setups. There must be some technical explanation for why my hardware (monitors) are behaving differently in these different Windows monitor modes.
I would like to keep Duplicate mode enabled so I dont have to constantly switch between setups to accommodate this issue.


Get this bounty!!!

#StackBounty: #windows-10 #graphics-card #display #multiple-monitors #resolution Win10 display settings 'Duplicate mode' interf…

Bounty: 50

I am gamer/programmer on Windows 10 64 bit Pro edition who plays/works at 1920 x 1080 resolution with the need to minimize my game to get to windows which is running at the same resolution. I am using 2 insignia monitors in ‘Duplicate’ mode with a GTX 970 Nvidia Graphics GPU

The issue I am having is that my monitors are receiving a resolution switch signal each time I make the switch from game to desktop or vice versa, despite that the game is played in 1080p and that the desktop resolution is also 1080p.

To understand this further you should understand that when I normally change resolutions in Windows, my TV produces an OSD showing which resolution is in effect. While this is considered normal behavior for the TVs that I am using while switching resolutions are waking from sleep, it is not normal when the resolution is not actually changing and that the devices are already on. Here is a shot of the OSD that pops up when I switch to game in the same resolution as the desktop:

enter image description here

After doing some testing I came to realize that the issue does not happen on either monitor when only one monitor is selected in the display settings (either when PC screen Only or Secondary screen only are selected). If Duplicate mode is enabled the issue is persistent.

enter image description here

So what I would like to understand (and correct if possible), is how Windows 10 and my GPU are handling the different monitor setups. There must be some technical explanation for why my hardware (monitors) are behaving differently in these different Windows monitor modes.
I would like to keep Duplicate mode enabled so I dont have to constantly switch between setups to accommodate this issue.


Get this bounty!!!

#StackBounty: #windows-10 #graphics-card #display #multiple-monitors #resolution Win10 display settings 'Duplicate mode' interf…

Bounty: 50

I am gamer/programmer on Windows 10 64 bit Pro edition who plays/works at 1920 x 1080 resolution with the need to minimize my game to get to windows which is running at the same resolution. I am using 2 insignia monitors in ‘Duplicate’ mode with a GTX 970 Nvidia Graphics GPU

The issue I am having is that my monitors are receiving a resolution switch signal each time I make the switch from game to desktop or vice versa, despite that the game is played in 1080p and that the desktop resolution is also 1080p.

To understand this further you should understand that when I normally change resolutions in Windows, my TV produces an OSD showing which resolution is in effect. While this is considered normal behavior for the TVs that I am using while switching resolutions are waking from sleep, it is not normal when the resolution is not actually changing and that the devices are already on. Here is a shot of the OSD that pops up when I switch to game in the same resolution as the desktop:

enter image description here

After doing some testing I came to realize that the issue does not happen on either monitor when only one monitor is selected in the display settings (either when PC screen Only or Secondary screen only are selected). If Duplicate mode is enabled the issue is persistent.

enter image description here

So what I would like to understand (and correct if possible), is how Windows 10 and my GPU are handling the different monitor setups. There must be some technical explanation for why my hardware (monitors) are behaving differently in these different Windows monitor modes.
I would like to keep Duplicate mode enabled so I dont have to constantly switch between setups to accommodate this issue.


Get this bounty!!!

#StackBounty: #windows-10 #graphics-card #display #multiple-monitors #resolution Win10 display settings 'Duplicate mode' interf…

Bounty: 50

I am gamer/programmer on Windows 10 64 bit Pro edition who plays/works at 1920 x 1080 resolution with the need to minimize my game to get to windows which is running at the same resolution. I am using 2 insignia monitors in ‘Duplicate’ mode with a GTX 970 Nvidia Graphics GPU

The issue I am having is that my monitors are receiving a resolution switch signal each time I make the switch from game to desktop or vice versa, despite that the game is played in 1080p and that the desktop resolution is also 1080p.

To understand this further you should understand that when I normally change resolutions in Windows, my TV produces an OSD showing which resolution is in effect. While this is considered normal behavior for the TVs that I am using while switching resolutions are waking from sleep, it is not normal when the resolution is not actually changing and that the devices are already on. Here is a shot of the OSD that pops up when I switch to game in the same resolution as the desktop:

enter image description here

After doing some testing I came to realize that the issue does not happen on either monitor when only one monitor is selected in the display settings (either when PC screen Only or Secondary screen only are selected). If Duplicate mode is enabled the issue is persistent.

enter image description here

So what I would like to understand (and correct if possible), is how Windows 10 and my GPU are handling the different monitor setups. There must be some technical explanation for why my hardware (monitors) are behaving differently in these different Windows monitor modes.
I would like to keep Duplicate mode enabled so I dont have to constantly switch between setups to accommodate this issue.


Get this bounty!!!