Custom Resolution Utility (CRU)

[ToastyX]

(11-21-2020 04:13 AM)lnxneo Wrote:  Need some help to configure CRU.
My setup: a laptop (CPU is i5-1035G4) running Win10 -> HDMI to DisplayPort adapter -> Apple LED Cinema 27 Monitor (A1316). The computer detects the monitor, but could not make it active, monitor remains black screen.
To verify that the monitor is okay: with the same setup, except booting into Linux. the nonitor works just fine.
To verify that the "HDMI to Display Adapter" works in Win 10, I swapped out only Apple LED Cinema 27 monitor with Dell 27 monitor, everything works fine too.
What shall I change in CRU to make original setup working?

You need an HDMI data block in a CEA-861 extension block to go beyond 165 MHz pixel clock with HDMI.

[ahmetomer]

(11-13-2020 08:16 PM)ToastyX Wrote:  

(11-13-2020 05:44 PM)ahmetomer Wrote:  hello

i am using HD5450(i sold my rx580 i am saving up for 6800). I did the ati patcher and 2560x1440p is now uncloked.

but cant i make a 100hz 1440p resolution?

i cant add anything over 1080p in the CRU

is there a way to import settings? if yes how?

thanks

my display is chg70 27

i have hdmi 2.0 and DVI to HDMI cable

There's no way you're going to get 2560x1440 @ 100 Hz over HDMI with the HD 5450. It doesn't have HDMI 2.0. What settings do you want to import? You can export the settings to a file and import the file.

hi i have DVI cable too. cant it do 100hz? or at least 90hz

[misumiya8]

I want make QHD 168 hz Configuration. How should I set each value?

[msk]

(11-21-2020 02:37 PM)ToastyX Wrote:  

(11-21-2020 09:57 AM)msk Wrote:  I found problem. When I connect main monitor (MSI G241) via DisplayPort and set 142Hz GPU work correctly but when I connect second monitor (LG E2251) via HDMI or adapter DP>HDMI vram again jumps to +1700MHz. Have you guys an idea what to do after connecting the second monitor so that the value does not increase?

Both monitors must run at the same resolution and refresh rate with the same exact timing parameters to synchronize the monitors. The memory clock changes during the blanking period to avoid screen corruption. If the two monitors aren't synchronized, it can't change the memory clock without corrupting one of the screens.

Thanks for information. I gave up with CRU but I discovered that when I connect only main monitor via DP Vram value are fine in Wattman (without any custom refresh rate) and when I connect him via HDMI Vram jump to high values. What can be reason this thing?

[ToastyX]

(11-21-2020 04:41 PM)msk Wrote:  Thanks for information. I gave up with CRU but I discovered that when I connect only main monitor via DP Vram value are fine in Wattman (without any custom refresh rate) and when I connect him via HDMI Vram jump to high values. What can be reason this thing?

Look at the timing parameters. The timing parameters for HDMI are probably reduced to fit within 340 MHz pixel clock. If the vertical blanking is too low, the memory clock won't have enough time to retrain the memory without screen corruption.

[ToastyX]

(11-21-2020 03:31 PM)misumiya8 Wrote:  I want make QHD 168 hz Configuration. How should I set each value?

Use the timing options. You'll have to use a DisplayID extension block.

[ToastyX]

(11-21-2020 03:22 PM)ahmetomer Wrote:  hi i have DVI cable too. cant it do 100hz? or at least 90hz

That monitor doesn't have DVI. You would need dual-link DVI. Single-link DVI won't work, and HDMI is always single-link.

[lnxneo]

(11-21-2020 02:39 PM)ToastyX Wrote:  

(11-21-2020 04:13 AM)lnxneo Wrote:  Need some help to configure CRU.
My setup: a laptop (CPU is i5-1035G4) running Win10 -> HDMI to DisplayPort adapter -> Apple LED Cinema 27 Monitor (A1316). The computer detects the monitor, but could not make it active, monitor remains black screen.
To verify that the monitor is okay: with the same setup, except booting into Linux. the nonitor works just fine.
To verify that the "HDMI to Display Adapter" works in Win 10, I swapped out only Apple LED Cinema 27 monitor with Dell 27 monitor, everything works fine too.
What shall I change in CRU to make original setup working?

You need an HDMI data block in a CEA-861 extension block to go beyond 165 MHz pixel clock with HDMI.

Thanks ToastyX!.
Apple LED Cinema already has a CEA-861 extension block and has 2560x1440 @59.95 (241.50MHz) listed in detailed resolutions section. Anything else I could try? Thanks!

[ToastyX]

(11-21-2020 08:34 PM)lnxneo Wrote:  Apple LED Cinema already has a CEA-861 extension block and has 2560x1440 @59.95 (241.50MHz) listed in detailed resolutions section. Anything else I could try? Thanks!

Does it have an HDMI data block? The extension block by itself is not enough.

[lnxneo]

(11-21-2020 10:51 PM)ToastyX Wrote:  

(11-21-2020 08:34 PM)lnxneo Wrote:  Apple LED Cinema already has a CEA-861 extension block and has 2560x1440 @59.95 (241.50MHz) listed in detailed resolutions section. Anything else I could try? Thanks!

Does it have an HDMI data block? The extension block by itself is not enough.

Yes, It has HDMI data block.