St0RM33
Automotive
- Dec 14, 2015
- 27
I have a very very weird issue and i'm trying to see what is causing it.
So basically i'm running a system with a 5700XT, 19.12.2 drivers, win10 1909 and 2 displays (1x 1440p 10bit freesync over DP, + 1x 1080p 8bit over HDMI).
Second (aka the 1080p) monitor is run through an EDID emulator passthrough so i can turn off the monitor and prevent it from disconnecting so that my windows/desktop stay the same.
Installed Siemens NX 1899 and upon launching as soon as it loads past the splash screen, secondary monitor goes black and keeps trying and re-trying to "get the signal".
Weirdly when this happens if you go into windows display settings for this monitor the resolution is still the same but changed to 25hz from 60hz..setting it back manually to 60hz does report it "changed" but in reality it didn't since when you close the window and re-open it to refresh it resets to 25hz..
As soon as you close NX, everything returns to normal.
Removing the EDID passthrough from the chain works as expected. Siemens NX is the only software i came across so far in the 2 months i have this system that does this.
I did a couple of tests but i didn't find a workaround or the cause of the issue yet.
So it basically either:
- Siemens NX
- GPU
- GPU drivers
- Edid passthrough
- Monitor
I'm really smelling it has something to do with keeping custom/emulated EDID as a workstation feature available only in PRO/FirePro cards and this is a way to prevent people from using a cheap solution such as this but i'll need to test more (different monitor, different GPU/drivers, different NX version)
Anybody has an idea on this until i keep digging deeper?
edit: EDID passthrough info (not mine but should be the same) It's this one specifically:
edit2: Could be an issue where NX detects this as a TV and not a monitor and decides to shut it? No idea just guessing since the passthrough reads as "Mi TV"
So basically i'm running a system with a 5700XT, 19.12.2 drivers, win10 1909 and 2 displays (1x 1440p 10bit freesync over DP, + 1x 1080p 8bit over HDMI).
Second (aka the 1080p) monitor is run through an EDID emulator passthrough so i can turn off the monitor and prevent it from disconnecting so that my windows/desktop stay the same.
Installed Siemens NX 1899 and upon launching as soon as it loads past the splash screen, secondary monitor goes black and keeps trying and re-trying to "get the signal".
Weirdly when this happens if you go into windows display settings for this monitor the resolution is still the same but changed to 25hz from 60hz..setting it back manually to 60hz does report it "changed" but in reality it didn't since when you close the window and re-open it to refresh it resets to 25hz..
As soon as you close NX, everything returns to normal.
Removing the EDID passthrough from the chain works as expected. Siemens NX is the only software i came across so far in the 2 months i have this system that does this.
I did a couple of tests but i didn't find a workaround or the cause of the issue yet.
So it basically either:
- Siemens NX
- GPU
- GPU drivers
- Edid passthrough
- Monitor
I'm really smelling it has something to do with keeping custom/emulated EDID as a workstation feature available only in PRO/FirePro cards and this is a way to prevent people from using a cheap solution such as this but i'll need to test more (different monitor, different GPU/drivers, different NX version)
Anybody has an idea on this until i keep digging deeper?
edit: EDID passthrough info (not mine but should be the same) It's this one specifically:
edit2: Could be an issue where NX detects this as a TV and not a monitor and decides to shut it? No idea just guessing since the passthrough reads as "Mi TV"
