Custom Resolution Utility (CRU)

[fadius]

Hello,

I've been looking for a way to restart my GPUs and came across this utility. restart64 does exactly what I need. But was wondering if there's a way to run it without having display the popup GUI at the end?

[ToastyX]

(12-22-2017 03:16 PM)fadius Wrote:  I've been looking for a way to restart my GPUs and came across this utility. restart64 does exactly what I need. But was wondering if there's a way to run it without having display the popup GUI at the end?

Yes, either rename it to restart-only.exe or pass the -q parameter.

[fadius]

(12-22-2017 03:26 PM)ToastyX Wrote:  

(12-22-2017 03:16 PM)fadius Wrote:  I've been looking for a way to restart my GPUs and came across this utility. restart64 does exactly what I need. But was wondering if there's a way to run it without having display the popup GUI at the end?

Yes, either rename it to restart-only.exe or pass the -q parameter.

that's awesome, thank you. are there other parameters? documented anywhere? thanks again!

[ToastyX]

(12-22-2017 03:33 PM)fadius Wrote:  that's awesome, thank you. are there other parameters? documented anywhere? thanks again!

No, just that one.

[Zibri]

(12-21-2017 09:56 PM)ToastyX Wrote:  

(12-21-2017 01:31 PM)Zibri Wrote:  LGD04E8 which is in reality a LP173WF4-SF5 which works between 30 and 120 hz vertical refresh.

That's a panel. Are you talking about a laptop screen? Keep in mind that internal interfaces have bandwidth limitations. Someone mentioned running into a 240 MHz pixel clock limit on their laptop. That would only be enough to get around 100 Hz at 1920x1080.

Hmm I know but probably you misunderstood... I wish to know why windows and intel graphics settings don't SHOW the refresh rates... I wish to test them one by one to see the monitor and bus limits...
On another laptop with the same monitor but switchable nvidia card I could SEE the refresh rates in the list and test them one by one.
This is using PRIME so the gfx card manging the monitor is the intel one (even if nvidia card is always active).
I wish to be able to select over 100Hz for testing but I don't know who is actually limiting it.

[ToastyX]

(12-23-2017 06:38 AM)Zibri Wrote:  Hmm I know but probably you misunderstood... I wish to know why windows and intel graphics settings don't SHOW the refresh rates... I wish to test them one by one to see the monitor and bus limits...

No, that's my point. If the interface to the panel has a 240 MHz pixel clock limit, then the driver will ignore any resolutions beyond 240 MHz. You said it did show 50 Hz, 60 Hz, and 90 Hz, but not 120 Hz. 120 Hz is beyond the 240 MHz limit. It's possible the other laptop has an internal interface with a higher limit. The panel itself is not the limiting factor. The internal connection is.

[Zibri]

The panel uses an eDP interface (latest version) so it should support higher bandwidth

[ToastyX]

(12-23-2017 10:08 AM)Zibri Wrote:  The panel uses an eDP interface (latest version) so it should support higher bandwidth

DisplayPort can have a varying number of lanes running at different speeds. Most laptops are not going to have more than they need to support the particular panel.

From here: https://en.wikipedia.org/wiki/DisplayPort

Wikipedia Wrote:The DisplayPort connector can have one, two, or four differential data pairs (lanes) in a Main Link, each with a raw bit rate of 1.62 (reduced bit rate), 2.7 (high bit rate), 5.4 (HBR2), or 8.1 Gbit/s (HBR3) per lane (6.48, 10.8, 21.6, or 32.4 Gbit/s for a full 4-lane link) with self-clock running at 162, 270, 540, or 810 MHz. The effective data rates after decoding are 1.296, 2.16, 4.32, or 6.486 Gbit/s per lane (5.184, 8.64, 17.28, or 25.92 Gbit/s for a full 4-lane link), or 80% of the total, since data is 8b/10b encoded so each eight bits of information are encoded with a ten-bit symbol.

1920x1080 @ 60 Hz only requires 138.5 MHz (CVT-RB) or 148.5 MHz (CEA-861). 2 lanes at @ 2.7 Gbit/s is the minimum required to support such a resolution, which ends up having a 180 MHz pixel clock limit for 8-bit color and 240 MHz for 6-bit color.

[Zibri]

Hmm.. it seems you are right, I checked... 240 Mhz limit.. Anyway I created a lower resolution to check maximum vertical frequency of this monitor. It seems to be about 108 Mhz...
I wish there were a small utility to check resolutions and frequencies in real time.. without needing to reboot and test every time.

[ToastyX]

(12-23-2017 11:10 AM)Zibri Wrote:  I wish there were a small utility to check resolutions and frequencies in real time.. without needing to reboot and test every time.

That would require driver-specific methods, and Intel doesn't provide any information publicly. Does restart.exe work with Intel GPUs? That would save you from rebooting at least.