Custom Resolution Utility (CRU)

[zanac]

Hi,

i'm interested to buy an i7 "Comet Lake-U" with integrated video card... and i need to use it with a custom 2560x240p (15 khz arcade resolution).
For now the only way to use this resolution in intel video card was to use Linux in which i can force it.... but i just discovered CRU. Does it will work with recent intel video card like Linux?
Can i convert a linux modeline to CRU parameters?

let me know before to buy the new PC

thank in advance,
regards,

[myhrmans]

Hey. What is causing me not being able to set 172 as a value for Front Porch here?

[ToastyX]

(09-10-2020 11:05 AM)myhrmans Wrote:  Hey. What is causing me not being able to set 172 as a value for Front Porch here?

EDID limit is 63. Either change the back porch instead, or use a DisplayID extension block.

[ToastyX]

(09-09-2020 08:35 AM)zanac Wrote:  i'm interested to buy an i7 "Comet Lake-U" with integrated video card... and i need to use it with a custom 2560x240p (15 khz arcade resolution).
For now the only way to use this resolution in intel video card was to use Linux in which i can force it.... but i just discovered CRU. Does it will work with recent intel video card like Linux?
Can i convert a linux modeline to CRU parameters?

let me know before to buy the new PC

CRU should work with newer Intel GPUs, but some people have had trouble for some reason, mainly with laptops. Also, Windows will not list any resolutions below 480p, so I don't know if the driver will allow 2560x240p or not. I don't know what limitations Intel's driver has.

Linux modelines are just the timing parameters added together, so 1080 1081 1084 1089 is 1080 1 3 5 in CRU.

[zanac]

(09-10-2020 11:49 AM)ToastyX Wrote:  

(09-09-2020 08:35 AM)zanac Wrote:  i'm interested to buy an i7 "Comet Lake-U" with integrated video card... and i need to use it with a custom 2560x240p (15 khz arcade resolution).
For now the only way to use this resolution in intel video card was to use Linux in which i can force it.... but i just discovered CRU. Does it will work with recent intel video card like Linux?
Can i convert a linux modeline to CRU parameters?

let me know before to buy the new PC

CRU should work with newer Intel GPUs, but some people have had trouble for some reason, mainly with laptops. Also, Windows will not list any resolutions below 480p, so I don't know if the driver will allow 2560x240p or not. I don't know what limitations Intel's driver has.

Linux modelines are just the timing parameters added together, so 1080 1081 1084 1089 is 1080 1 3 5 in CRU.

ok, for example here you are my Linux working modeline for 1920x240p (that is the other resolution that i use with another PC with an Intel video and Linux):
"MODE_1920_240" 37.778 1920 1977 2154 2376 240 243 245 265 -hsync -vsync

But the question is... if i will try to use qres with command line, for select a resolution that is not listed in Windows, maybe it will work?

There is someone that has an Intel board and Windows to try my 1920x240p? If someone can try i will pay a coeffee for thanks

[myhrmans]

(09-10-2020 11:45 AM)ToastyX Wrote:  

(09-10-2020 11:05 AM)myhrmans Wrote:  Hey. What is causing me not being able to set 172 as a value for Front Porch here?

EDID limit is 63. Either change the back porch instead, or use a DisplayID extension block.

Is this limit decided by Nvidia or Windows?

When I enter a custom resolution in Nvidia Control Panel it allows me to save it as 127 front porch. But reading that setup by CRU it says 44 front, 136 back.

[ToastyX]

(09-10-2020 12:25 PM)myhrmans Wrote:  Is this limit decided by Nvidia or Windows?

When I enter a custom resolution in Nvidia Control Panel it allows me to save it as 127 front porch. But reading that setup by CRU it says 44 front, 136 back.

Neither. EDID is a standard: https://en.wikipedia.org/wiki/Extended_D...ation_Data

The NVIDIA control panel custom resolutions have nothing to do with the EDID. CRU is an EDID editor. You can use a DisplayID extension block to add resolutions with higher limits.

[ToastyX]

(09-10-2020 12:10 PM)zanac Wrote:  ok, for example here you are my Linux working modeline for 1920x240p (that is the other resolution that i use with another PC with an Intel video and Linux):
"MODE_1920_240" 37.778 1920 1977 2154 2376 240 243 245 265 -hsync -vsync

But the question is... if i will try to use qres with command line, for select a resolution that is not listed in Windows, maybe it will work?

You just subtract the next number for each parameter:

Code:

Active:      1920  240
Front porch: 57    3
Sync width:  177   2
Back porch:  222   20
Polarity:    -     -

When tested with AMD/ATI GPUs, QuickRes is able to set lower resolutions added with CRU that aren't listed in Windows.

[zanac]

(09-10-2020 12:37 PM)ToastyX Wrote:  

(09-10-2020 12:10 PM)zanac Wrote:  ok, for example here you are my Linux working modeline for 1920x240p (that is the other resolution that i use with another PC with an Intel video and Linux):
"MODE_1920_240" 37.778 1920 1977 2154 2376 240 243 245 265 -hsync -vsync

But the question is... if i will try to use qres with command line, for select a resolution that is not listed in Windows, maybe it will work?

You just subtract the next number for each parameter:

Code:

Active:      1920  240
Front porch: 57    3
Sync width:  177   2
Back porch:  222   20
Polarity:    -     -

When tested with AMD/ATI GPUs, QuickRes is able to set lower resolutions added with CRU that aren't listed in Windows.

oh, thanks, i fully understand.

regards,

[myhrmans]

Aha. So the custom resolutions set by NVIDIA Control panel are not set using EDID?
Or are they set in a similar manner as CRU but converted to match the EDID Standard?