Well, then I don't understand what action needs to be taken. https://virtualgl.org/Documentation/HeadlessNV already says "Leave out --use-display-device=None if the GPU is headless, i.e. if it has no display outputs." That seems like a correct statement, given what you're saying.
DRC On 3/2/21 12:16 PM, Jason Edgecombe wrote: > Yes, it looks like it. > > Here is an Xorg snippet for display :1 from one of my RHEL7 servers > with an NVvidia Quadro M2000 card.: > > Section "Screen" > Identifier "Screen0" > Device "Device0" > Monitor "Monitor0" > DefaultDepth 24 > Option "AllowEmptyInitialConfiguration" "True" > Option "UseDisplayDevice" "none" > SubSection "Display" > Virtual 1920 1200 > Depth 24 > EndSubSection > EndSection > > > The above server has a Matrox graphics card for the console and the > M2000 handles VirtualGL. > > FYI, There is a quirk where Xorg still blanks the console when the > Xorg on :1 is active. I haven't figured out how to fix that. > > Jason > > --------------------------------------------------------------------------- > Jason Edgecombe | Linux Administrator > UNC Charlotte | Office of OneIT > 9201 University City Blvd. | Charlotte, NC 28223-0001 > Phone: 704-687-1943 <tel:704-687-1943> > [email protected] <mailto:[email protected]> | http://engr.uncc.edu | > Facebook > --------------------------------------------------------------------------- > If you are not the intended recipient of this transmission or a person > responsible for delivering it to the intended recipient, any > disclosure, copying, distribution, or other use of any of the > information in this transmission is strictly prohibited. If you have > received this transmission in error, please notify me immediately by > reply e-mail or by telephone at > 704-687-1943 <tel:704-687-1943>. Thank you. > > > On Tue, Mar 2, 2021 at 1:05 PM DRC <[email protected] > <mailto:[email protected]>> wrote: > > OK, so does that mean that 'UseDisplayDevice "None"' is still > supported with GPUs that have display connections? If not, then > how would one specify headless mode with those GPUs? > > On 3/2/21 12:00 PM, Jason Edgecombe wrote: >> NVidia Tesla's are designed as GPU compute cards and Graphics >> accelerators. They literally don't have any VGA/DisplayPort/HDMI >> ports on the back of the card. lspci shows them as a "3D >> Controller" instead of a VGA display card. >> >> Sincerely, >> Jason >> >> --------------------------------------------------------------------------- >> Jason Edgecombe | Linux Administrator >> UNC Charlotte | Office of OneIT >> 9201 University City Blvd. | Charlotte, NC 28223-0001 >> Phone: 704-687-1943 <tel:704-687-1943> >> [email protected] <mailto:[email protected]> | >> http://engr.uncc.edu | Facebook >> >> --------------------------------------------------------------------------- >> If you are not the intended recipient of this transmission or a >> person responsible for delivering it to the intended recipient, >> any disclosure, copying, distribution, or other use of any of the >> information in this transmission is strictly prohibited. If you >> have received this transmission in error, please notify me >> immediately by reply e-mail or by telephone at >> 704-687-1943 <tel:704-687-1943>. Thank you. >> >> >> On Tue, Mar 2, 2021 at 12:46 PM DRC <[email protected] >> <mailto:[email protected]>> wrote: >> >> [*Caution*: Email from External Sender. Do not click or open >> links or attachments unless you know this sender.] >> >> >> I don't understand how the driver knows to treat the GPU as >> headless if you don't specify 'UseDisplayDevice "None"' in >> xorg.conf. >> >> On 3/2/21 11:29 AM, qwofford wrote: >>> The headless mode works for all GPUs I've tested so far >>> without UseDisplayDevice "None", including V100's. I'm >>> thinking the "--use-display-device=None" breaks some subset >>> of headless GPU/driver combinations. So...beyond some Nvidia >>> driver version, some GPU's will break with this option. All >>> GPU's I've tested work OK without this option, at Nvidia >>> driver 455.32.00. >>> >>> DRC, let me know if you want me to do some troubleshooting >>> for you. Happy to help the project where I can. I am >>> removing this from option from our xorg.conf deployment >>> mechanism. If I get any complaints, I'll dig in and let you >>> know wht I find. >>> >>> On Tuesday, March 2, 2021 at 10:11:30 AM UTC-7 DRC wrote: >>> >>> What do they propose instead? Is headless operation no >>> longer supported with Tesla GPUs? >>> >>> On 3/2/21 11:03 AM, Youssef GHORBAL wrote: >>>> Hi, >>>> >>>> Last time I asked Nvidia about this very message they >>>> give me this feedback: >>>> >>>> "This is due to a change in our driver. And you are >>>> right, you need to remove the Option "UseDisplayDevice" >>>> "none" from the Xorg conf file. See release not >>>> here: >>>> https://docs.nvidia.com/datacenter/tesla/tesla-release-notes-440-3301/index.html >>>> (section >>>> 1.3 Known Issues / NoScanout Mode) >>>> As you pointed out this is harmless. Nevertheless, I am >>>> hoping this will be improved in a future release." >>>> >>>> Bascially, the error message is somehow misleading and >>>> has nothing to do with GRID technology at all. >>>> >>>> Youssef >>>> -------------------- >>>>> On 2 Mar 2021, at 17:42, qwofford >>>>> <[email protected]> wrote: >>>>> >>>>> Hello, >>>>> >>>>> I'm using VirtualGL 2.6.2 with a Tesla V100 in >>>>> headless mode, and NVIDIA driver v455.32.00. It >>>>> appears that my config file, as generated by the >>>>> Headless Nvidia mini How-To, is conflicting with the >>>>> V100 as configured. >>>>> >>>>> (EE) NVIDIA(GPU-0): UseDisplayDevice "None" is not >>>>> supported with GRID >>>>> (EE) NVIDIA(GPU-0): displayless >>>>> >>>>> Is this something you've seen before? Looking at how >>>>> to disable GRID vGPU support now, which I hope will >>>>> solve the problem... >>>>> >>>>> Thanks, >>>>> Quincy >>>>> >>>>> -- >>>>> You received this message because you are subscribed >>>>> to the Google Groups "VirtualGL User >>>>> Discussion/Support" group. >>>>> To unsubscribe from this group and stop receiving >>>>> emails from it, send an email to >>>>> [email protected]. >>>>> To view this discussion on the web visit >>>>> >>>>> https://groups.google.com/d/msgid/virtualgl-users/f94a8abe-22fd-442c-95ab-da7d6b61cbbbn%40googlegroups.com >>>>> >>>>> <https://urldefense.com/v3/__https://groups.google.com/d/msgid/virtualgl-users/f94a8abe-22fd-442c-95ab-da7d6b61cbbbn*40googlegroups.com?utm_medium=email&utm_source=footer__;JQ!!JFdNOqOXpB6UZW0!-Bh5kXOukJMv6nOXNnur-Vsywv7tlZ8Oqhgzdy0xdiwCiv8-HocmPCOVoT1CU4t6mw6wm3JK$>. >>>> >>>> -- >>>> You received this message because you are subscribed to >>>> the Google Groups "VirtualGL User Discussion/Support" >>>> group. >>>> To unsubscribe from this group and stop receiving >>>> emails from it, send an email to >>>> [email protected]. >>>> To view this discussion on the web visit >>>> >>>> https://groups.google.com/d/msgid/virtualgl-users/E626C2EF-A528-443C-8246-3A8B03FD58E0%40pasteur.fr >>>> >>>> <https://groups.google.com/d/msgid/virtualgl-users/E626C2EF-A528-443C-8246-3A8B03FD58E0%40pasteur.fr?utm_medium=email&utm_source=footer>. >>> >>> -- >>> You received this message because you are subscribed to the >>> Google Groups "VirtualGL User Discussion/Support" group. >>> To unsubscribe from this group and stop receiving emails >>> from it, send an email to >>> [email protected] >>> <mailto:[email protected]>. >>> To view this discussion on the web visit >>> >>> https://groups.google.com/d/msgid/virtualgl-users/16ede473-5b78-44ee-9248-22271bef10a9n%40googlegroups.com >>> >>> <https://groups.google.com/d/msgid/virtualgl-users/16ede473-5b78-44ee-9248-22271bef10a9n%40googlegroups.com?utm_medium=email&utm_source=footer>. >> -- >> You received this message because you are subscribed to the >> Google Groups "VirtualGL User Discussion/Support" group. >> To unsubscribe from this group and stop receiving emails from >> it, send an email to >> [email protected] >> <mailto:[email protected]>. >> To view this discussion on the web visit >> >> https://groups.google.com/d/msgid/virtualgl-users/cf378d92-6b5d-30d0-9ab6-8e927a6137ab%40virtualgl.org >> >> <https://groups.google.com/d/msgid/virtualgl-users/cf378d92-6b5d-30d0-9ab6-8e927a6137ab%40virtualgl.org?utm_medium=email&utm_source=footer>. >> >> -- >> You received this message because you are subscribed to the >> Google Groups "VirtualGL User Discussion/Support" group. >> To unsubscribe from this group and stop receiving emails from it, >> send an email to [email protected] >> <mailto:[email protected]>. >> To view this discussion on the web visit >> >> https://groups.google.com/d/msgid/virtualgl-users/CAAR6MGC-%3DVVQtWPoEMuAAC4NGptzm8b4jwPSkbPcsS9rmijYKA%40mail.gmail.com >> >> <https://groups.google.com/d/msgid/virtualgl-users/CAAR6MGC-%3DVVQtWPoEMuAAC4NGptzm8b4jwPSkbPcsS9rmijYKA%40mail.gmail.com?utm_medium=email&utm_source=footer>. > -- > You received this message because you are subscribed to the Google > Groups "VirtualGL User Discussion/Support" group. > To unsubscribe from this group and stop receiving emails from it, > send an email to [email protected] > <mailto:[email protected]>. > To view this discussion on the web visit > > https://groups.google.com/d/msgid/virtualgl-users/df2bf3fe-3b43-f55e-c629-e01faeb554c2%40virtualgl.org > > <https://groups.google.com/d/msgid/virtualgl-users/df2bf3fe-3b43-f55e-c629-e01faeb554c2%40virtualgl.org?utm_medium=email&utm_source=footer>. > > -- > You received this message because you are subscribed to the Google > Groups "VirtualGL User Discussion/Support" group. > To unsubscribe from this group and stop receiving emails from it, send > an email to [email protected] > <mailto:[email protected]>. > To view this discussion on the web visit > https://groups.google.com/d/msgid/virtualgl-users/CAAR6MGBS9%3DDzBv6mC-q0Ct%2BvdWM-1k9_3LfEwZUnjEFJCn0tyw%40mail.gmail.com > <https://groups.google.com/d/msgid/virtualgl-users/CAAR6MGBS9%3DDzBv6mC-q0Ct%2BvdWM-1k9_3LfEwZUnjEFJCn0tyw%40mail.gmail.com?utm_medium=email&utm_source=footer>. -- You received this message because you are subscribed to the Google Groups "VirtualGL User Discussion/Support" group. 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