Hi I have an interesting issue with waking my PC from sleep. Specs below:
Intel i5 6600K
Asus ROG Z170 Maximus VIII Gene (latest bios 1601)
Sapphire AMD Radeon R9 390 NITRO OC Graphics Card (latest drivers)
Corsair 8GB DDR4 Vengeance LPX 2666MHz (CMK16GX4M2A2666C16)
2 x Sandisk SSDs
Cooler Master V1000 (PSU)
Acer XR341CK (monitor)
This build will not wake from sleep when using DisplayPort with this monitor, the motherboard gives the q-code error 5d. Restarting the PC works fine, as does a power off and then power on. Interestingly waking when using a HDMI works fine with this monitor. However, the PC will wake from sleep using the same DisplayPort cable in a different lower resolution monitor (Dell). What could be going on here?
In summary:
Acer XR341CK --> DisplayPort - will not wake from sleep q-code 5d
Acer XR341CK --> HDMI - wakes from sleep
Dell 1080p monitor --> DisplayPort - wakes from sleep.
Before realizing all the combinations that do work, I thought my build might be at fault, but I have stress tested it vigouriously and it doesn't break a sweat. Overnight Memtest is also fine. I have tried different display ports on the PC. I have tried turning off hybrid sleep.
Any help is appreciated. What could be stopping that particular combination from working?
Thanks.
FIXED: I managed to get hold of a new DisplayPort cable with which Acer XR341CK --> DisplayPort wake from sleep works... All I can imagine is that a lower quality cable is unable to handle whatever 'handshake' occurs on wake between the monitor and graphics card at an ultrawide QHD resolution. Any ideas why that could be?
