ALTaleX531
Extremely buggy behaviour when using both iGPU and dGPU together for multi-monitor setup
When using a dedicated GPU alongside an integrated GPU for a multi monitor setup, extremely buggy behaviour is present. Strange lines appear on the glass, and windows appear to melt onto the screen on the second monitor (setting it to primary seems to make no difference). It mostly happens on the second monitor but can also be seen on the primary one.
I had to record it with my phone, as it won't show in screenshots.
https://github.com/user-attachments/assets/23c24548-f221-4293-9b57-d598435c5de2
I am using the latest intel uhd graphics 770 driver alongside an RTX 4080. This issue does not happen when running both monitors off the 4080.
This setup brings better performance in games and avoids significant windows vsync bugs, so it's not at all unheard of. There's plenty of examples of others using it online.
I think it's fixed in the latest version and you can always reopen this issue if it happens again.
I think it's fixed in the latest version and you can always reopen this issue if it happens again.
https://imgur.com/a/oSHBcI0
Here are some videos demonstrating the problem now. It is much worse. I don't have permission to reopen the issue.
I wonder if the newest build fixing #115 resolves this. I'm not sure, I can't test this because I don't have a set up compatible. But it seems like a similar issue as seen in #115.
@DAPOPOBEFASTONYOAZZ I think it's unrelated.
@bendwv Have you tried updating your graphics drivers? Does the problem still occur when BlurDeviation is 0?
@DAPOPOBEFASTONYOAZZ I think it's unrelated. @bendwv Have you tried updating your graphics drivers? Does the problem still occur when
BlurDeviationis 0?
I'm testing with latest version of openglass, on the latest RTX 4080 and Intel UHD Graphics 770 drivers.
https://imgur.com/a/J8ueQhp
It might look a bit different now, but it's still very bad. It only happens if the large monitor is set at higher than around 100hz. The monitor goes up to 360hz, where it's the worst. As I lower the refresh rate of the large monitor, it progressively gets better. At 120hz it only appears at the bottom inch of the 2nd screen, and at 60hz it's gone.
Setting blur deviation to 0 seems to fix the problem entirely.
@DAPOPOBEFASTONYOAZZ I think it's unrelated. @bendwv Have you tried updating your graphics drivers? Does the problem still occur when
BlurDeviationis 0?I'm testing with latest version of openglass, on the latest RTX 4080 and Intel UHD Graphics 770 drivers.
https://imgur.com/a/J8ueQhp
It might look a bit different now, but it's still very bad. It only happens if the large monitor is set at higher than around 100hz. The monitor goes up to 360hz, where it's the worst. As I lower the refresh rate of the large monitor, it progressively gets better. At 120hz it only appears at the bottom inch of the 2nd screen, and at 60hz it's gone.
Setting blur deviation to 0 seems to fix the problem entirely.
That's pretty nasty...
I was hoping it may have been related to the aforementioned issue because it seemed like it caused a similar border ghosting effect.
@bendwv Try this to see if it gets rid of the tearing. You may see artifacts though, as I disabled the glass safe zones.
@bendwv Try this to see if it gets rid of the tearing. You may see artifacts though, as I disabled the glass safe zones.
That seems to have fixed it. I did indeed notice some artifacting though. Here's a video.
https://github.com/user-attachments/assets/080bb7c9-61b7-409a-97d1-3d471734f7a6
Have you used glass8 with this setup? Have you also encountered this problem?
Are you still there? How about trying the latest version to see if it solves the problem?
Are you still there? How about trying the latest version to see if it solves the problem?
Sincerest apologies for my lack of responses, I've been dealing with exams and stuff and haven't even had the chance to check my email for a while. After this Friday I will be free for months.
I will test things later today as requested and report back once I'm done.
Can confirm it's still happening with both the version posted here and the newest version on the releases page.
Then try this, I refactored the code of the glass safe zone.
If this still can't fix it, there's nothing I can do about it.
Still doesn't seem to fix it. The release with the disabled glass safety zones does indeed fix it though, wouldn't that mean it's possible to fix?
Looks like I need to change my approach. I’ll release a debug version later that logs the parameters of the glass safe zones and captures a screenshot of the current frame. That should help me fully figure out what’s going on.
Looks like I need to change my approach. I’ll release a debug version later that logs the parameters of the glass safe zones and captures a screenshot of the current frame. That should help me fully figure out what’s going on.
Alright, but I've noticed the issue doesn't show in screenshots or videos, that's why I had to record my screen with my phone to show it off.
is there any progress on this? :(
really want to use openglass again but this annoys me a little bit
Try this. This build runs fine on my friend's multi-monitor multi-GPU setup. If the issue persists, I can only assume it comes from the graphics driver or the system itself, and there's nothing more I can do until there's more information.
Remember, always run the uninstall script before switching between test and stable versions!
thanks for the attention🙏 im hospitalized rn, but when i come back to my notebook ill test it
Em qua., 17 de set. de 2025 às 19:11, ALTaleX @.***> escreveu:
ALTaleX531 left a comment (ALTaleX531/OpenGlass#97) https://github.com/ALTaleX531/OpenGlass/issues/97#issuecomment-3304707217
OpenGlass-legacy-test-15.zip https://github.com/user-attachments/files/22395061/OpenGlass-legacy-test-15.zip
Try this. This build runs fine on my friend's multi-monitor multi-GPU setup https://github.com/ALTaleX531/OpenGlass/issues/194#issuecomment-3289118378. If the issue persists, I can only assume it comes from the graphics driver or the system itself, and there's nothing more I can do until there's more information.
Remember, always run the uninstall script before switching between test and stable versions!
— Reply to this email directly, view it on GitHub https://github.com/ALTaleX531/OpenGlass/issues/97#issuecomment-3304707217, or unsubscribe https://github.com/notifications/unsubscribe-auth/BFUESTZ7EEIKZSXHS2ZYAE33THMBPAVCNFSM6AAAAAB2N7NZVSVHI2DSMVQWIX3LMV43OSLTON2WKQ3PNVWWK3TUHMZTGMBUG4YDOMRRG4 . You are receiving this because you commented.Message ID: @.***>
This is normal, as all test versions feature a debug frame rate counter and desktop watermark. I've noticed your OpenGlass appears to have crashed several times. Would you be willing to share the dump files?
ok, it crashed one time when booting for first time, then never again, at least on my sights, but ok i will
Em sex., 19 de set. de 2025 às 00:54, ALTaleX @.***> escreveu:
ALTaleX531 left a comment (ALTaleX531/OpenGlass#97) https://github.com/ALTaleX531/OpenGlass/issues/97#issuecomment-3310430388
This is normal, as all test versions feature a debug frame rate counter and desktop watermark. I've noticed your OpenGlass appears to have crashed several times. Would you be willing to share the dump files?
— Reply to this email directly, view it on GitHub https://github.com/ALTaleX531/OpenGlass/issues/97#issuecomment-3310430388, or unsubscribe https://github.com/notifications/unsubscribe-auth/BFUEST3UWRZNIH6C6SQFQOL3TN5AFAVCNFSM6AAAAAB2N7NZVSVHI2DSMVQWIX3LMV43OSLTON2WKQ3PNVWWK3TUHMZTGMJQGQZTAMZYHA . You are receiving this because you commented.Message ID: @.***>