Dual monitor on separate graphics card driver error #62651
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Reference: blender/blender#62651
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System Information
Operating system: Windows 10 Pro 64 Bit
Graphics card: 2 x GTX1080
Graphics driver: 25.21.14.1891
Blender Version
Broken: 2.80,
bf9904ec80Short description of error
Blender crashes when i try to open a blend file that has any floating window open besides the main UI Window, with the following error " Blender requires a graphics driver with at list OpenGL 3.3 support "
I believe this is happening because i have my monitors plunged in to two separate video card of same make and model,
a test blend file that produces this error test001.blend
Added subscriber: @u_n_ur_cat
#89796 was marked as duplicate of this issue
#85628 was marked as duplicate of this issue
#94462 was marked as duplicate of this issue
#88918 was marked as duplicate of this issue
#83320 was marked as duplicate of this issue
#82410 was marked as duplicate of this issue
#79065 was marked as duplicate of this issue
#77089 was marked as duplicate of this issue
#75386 was marked as duplicate of this issue
#74479 was marked as duplicate of this issue
#60019 was marked as duplicate of this issue
#63013 was marked as duplicate of this issue
Added subscriber: @GavinScott
I'll just throw in that if your 1080s do indeed have DVI-D output as shown in the screenshot, you can probably use a $6 DVI-D to HDMI cable to let you drive both monitors from a single card, which shouldn't be a problem for a 1080 and two HD displays.
Added subscriber: @ZedDB
Does it work if you only use one GPU to render opengl?
Probably a duplicate of: #61995
Yes, that seems to work, I no longer get the error when opening files with floating windows.
Thanks
Added subscriber: @ssh4
Duel Monitor on separate Graphics card Driver Erroeto Dual monitor on separate graphics card driver errorAdded subscriber: @brecht
While there is a workaround, we should try to fix this.
I haven't tested this setup myself, but since it's been reported by 3 users would consider it confirmed.
Can confirm that monitors should be connected to different video cards.
And using only one GPU to render opengl fix this issue.
Added subscriber: @fclem
@fclem I think we talked about this previously. I don't think blender does anything special with multi GPU/monitor setups. So I suspect that this is an issue on the driver side of things?
If it helps i didn't face this problem in blender 2.7 ... its only on 2.8 in my case.
Added subscribers: @jonathanwills, @Archost, @WillFalcon, @sjoerdsein, @SubliminalArtist
Added subscriber: @Jeroen-Bakker
I will set this as a known issue. Can be how OpenGL resources are shared between the two graphic cards. Blender OpenGL assumes that there is only a single GPU to take care of.
Added subscribers: @yak27, @mano-wii, @girafic
I think this definitely a bug, and almost a high priority one. This is a common setup and it shouldn't fail by default.
We may be able to only use one GPU, but then we should fix GHOST to enforce that somehow.
Worst case, we could try to show a better error message that explains how to work around this problem.
Added subscribers: @vicy.1832, @iss, @AnthonyEdlin
Added subscriber: @skantron
Added subscriber: @Ykadam
Removed subscriber: @sjoerdsein
Added subscriber: @Andrei-Feheregyhazi
Added subscriber: @CuttlefishKitch
Added subscriber: @cata_cg
Added subscriber: @JAPfeiffer
Added subscriber: @glenmoyes
To add an update on this issue, I got this bug in Blender 2.93 LTS. Plugging all monitors into the same card made it work. However, 2.91 didn't give me this issue (plugging multiple monitors across two 1080s). Same driver version in both tests. Regression between the two Blender versions perhaps?
Added subscribers: @chengll, @Harley
Removed subscriber: @glenmoyes
Added subscribers: @Prodeous, @Pierre-39, @PratikPB2123, @DuarteRamos
Added subscriber: @patricio.davila.ca
This issue was referenced by
fd1078e105Changed status from 'Confirmed' to: 'Resolved'
Added subscriber: @akcamay
Thank you all; this will help and I will try to hook up my three screens on the same card as I think this is what you are saying.
Added subscriber: @LittleRobotGuys
I have two screens set up where each is plugged into a different Nvidia GTX 960 that are connected by SLI. When running Blender on either I can open it fine; when saving or doing many other operations (like changing add-ons) with the Blender window on the SECONDARY screen it gives this error. It's like it forgets what driver to use, checks, and the secondary screen can only reply with the old non-OpenGL 3.3 file.