PG32UCDM DP1.4 PC FREEZE AND+ RTX5090

[kpkpkp]

hi

x870e taichi lite,2x48gb 6000 cl30+1300w+rtx5090 tuf NVDIA 581.80  driver.

When i plug just the ASUS PG32UCDM up to date . MCM108.  I start CALL of duty . The game start with black screen. The song is there of game .The screen don.t show my game and  on wire dp2.1 or the genuine cable of screen.  When i switch at hdmi the monitor work well .  

Problem 2 : When i plug my second monitor a MSI MAG274UPF 4K 144HZ with the Asus ROG on display port . The pc freeze when i start  a game or freeze on the desktop of windows. When i switch on hdmi the game work . When the monitors for the sleep mode ou standby . The monitor Asus turn off the screen and my second screen turn on on black screen . When i put the auto detect of port for the Asus at off Same problem . 

Problem 3 . When i switch all the monitor on dp 1.4 the pc freeze .

Problem 4. When i play on hdmi the 2 monitor hdmi2.1 (asus pg32ucdm vrr+hdr) (msi natif 120hz no vrr or hdr) . The drivers after 2hour of gaming . The monitor PG32UCDM  flash blackscreen and the screen retourn to the game with mention Dolby vision in the game (call of duty bo6) 

I try a ddu . updated the bios last version. Desactivated the igpu too . Forced the gen 5 or gen 4 same problem. 

When i separated the 2 monitor msi on igpu and the pg32ucdm on rtx5090. The standby work and wake up too when i start a game after 4hour of gaming the pc freeze . I come back on hdmi with a monitor all time a ON. 

On my old gpu 7900xtx the two monitor works well with the standby and wake up . PG32ucdm on hdmi and my second on dp

The psu is new a msi ai1300p 

[Silent_Scone]

Hi @kpkpkp 

Are you using a GPU riser cable? 

Are you able to sucessfully run Futuremark TimeSpy Extreme stress test without black screen or crashing?

[kpkpkp]

Hi @Silent_Scone 

riser cable no 

I run a timespy extreme with no problem . The score is 7 512 on cpu and on the gpu is of 25 663 with the total of 18 836. 

[Silent_Scone]

Thanks. Scores seem normal. 

It does seem like a DisplayPort handshake and driver issue. Does the issue occur with VRR disabled?

[kpkpkp]

i try this week without VRR on the Rog. I come back at you last week . I will testing this week .

[kpkpkp · Accepted solution]

Hi ,

The news update is that the problem is the motherboard give less of bandwith for the pcie . When i start the test i have 60gb/s and after fall at 42Gb/s bi-way after the monitor Asus rog make of error . The pci lane give of error after 2hour of gaming . Thanks of you help . I buy a new motherboard a MEG GODLAKE MSI . Because the Asus crosshair hero have too of bridge with the nvme. Good day