Cannot apply more than 256 MB graphic memory to Mojave 10.14.6 VM

Discussion in 'Mac OS X Guest OS Discussion' started by WolfgangS16, Oct 13, 2019.

  1. WolfgangS16

    WolfgangS16 Bit Poster

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    I just set up a Mojave VM to keep my "old" 32-bit Apps running. In the configurations I can set the graphic memory up to 2 GB, but in the VM only 256 MB is shown. This affects the installation of MS Office 2011:Mac and software that needs more graphic memory (Civ V and others) won't start up.
    I already tried to de-install and re-install Parallels Tools like described on the support pages, but that didn't work.
    Maybe the Parallels driver doesn't support my Radeon Pro 580 8GB?
    My machine specs are in the screenshot:
    Darkmode=VM, Lightmode=Host, Config-Box (video set to 512 MB)
    Bildschirmfoto.jpg
     
  2. WolfgangS16

    WolfgangS16 Bit Poster

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    just installed Parallels 15 test version --> same result, only 256 MB video ram for the Mojave VM
    nobody from Parallels reading here?
     
    AlexeyR1 likes this.
  3. AlexeyR1

    AlexeyR1 Bit Poster

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    Same issue here. I can allocate more memory in parallels settings but guest macOS 10.15 system is showing only 256mb was allocated...
     
  4. karlemilnikka

    karlemilnikka Bit Poster

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    I have the very same issue. It's almost unusable and Google Chrome won't render properly.
     

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  5. DavidG2

    DavidG2 Bit Poster

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    I see the same issue
     
  6. BRUCES3

    BRUCES3 Bit Poster

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    same issue here
     
  7. PeterB40

    PeterB40 Bit Poster

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    My issue is slightly different, but the same. :) running Mojave as the host (as I am running a good ol' Mac Pro 5,1 which is not supported in Catalina) and running Catalina as the guest. Yep, that's weird right, but let's not get sidetracked !!!!
    Same issue as all you guys however.
    Regardless of the 'hardware' setting of the VM, it only shows 256MB allocated.
    I'll try and open a support ticket ?? and if I cannot get this resolved in a timely manner, I think I'll perhaps just ask to get my money back... :) This is a bug right?? :)
    Stay tuned .....

    Gory details.
    Parallels Desktop 15 for Mac Pro Edition (15.1.1)
    Host : macOS Mojave (10.14.6)
    Guest : macOS Catalina (10.15.1)
    Physical Video Card : GForce GTX 6080 4GB (Mac Edition with bootscreen support)
     
  8. RogerH6

    RogerH6 Kilo Poster

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    Now it is the virtual display with Mojave that is not allowing more than 256MB to be selected. Same hardware set for 512MB on both a W10 virtual machine and a Mojave machine, reports 512MB in W10, but 256MB in Mojave. Interesting that it does the same above with a Catalina VM. Suggests these use the same virtual adapter driver.
    It is slightly surprising that Chrome gives the issue shown, since really 256MB should be enough to render any sensibly sized VM window, but that it does means this really should be fixed urgently... :(
     
  9. PeterB40

    PeterB40 Bit Poster

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    I confirmed that the Chrome rendering issue also exists when running Catalina as a VM. It was basically unusable.
    I guess the missing piece of information for me is whether this started with Mojave?
    Is anyone able to confirm that this issue was NOT an issue prior to Mojave? :)
    Perhaps it's NEVER worked with a macOS guest? Just a big fat guess that one..... Confirmation of that would help with the support case.

    I guess I should point out that for me, this is not life or death.
    I got sucked into buying Parallels 15 because of the 'supposed' Catalina support.
    and Catalina? well, that has sort of been a bit of a train-wreck in itself.
    and I can't even run Catalina natively on my trust Mac Pro 5,1 which is why I guess I'm in this pickle in the first place.


    I really have no practical use case for this. I'm just a geek, and just want it to work... :)
    But I certainly do get that others here DO have a valid use case (running the 32 bit stuff you need)

    It looks to me, on the surface at least, Parallels has a great product if you want to run a Win10 guest. Which I do, and it works great.
    Perhaps macOS guests? Not so much......

    I will be continuing this with the support folks until I get a resolution however....
     
  10. RogerH6

    RogerH6 Kilo Poster

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    I don't think this is a Catalina, or Mojave issue, but an issue with the virtual display driver.
    We have one poster here having it with Mojave, trying to run a virtual Catalina, and others with Catalina, trying to run virtual Mojave. In both cases the same problem shows. The virtual machine setup merrily allows you to allocate more than 256MB (in fact on mine it shows 512MB as the 'recommended' size), but inside the VM, the display is only shown as having 256MB, and then in some programs gives rendering issues. It's the virtual display driver used for a Mac OS, on recent releases of Parallels that is showing this (I did have a Mac VM a while ago, and don't remember seeing this, but not sure what the Parallels version was).
     
  11. PeterB40

    PeterB40 Bit Poster

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    Good info. Yes, I agree that this does NOT appear to be a Mojave/Catalina issue.
    I've opened a support ticket, and here are some of the highlights so far :)

    1. The original response (from what I'm guessing is a Tier 1 support guy) was :
    "We would like to inform you that, the maximum graphics memory that can be allocated to macOS virtual machine is only 256 MB since it is a application limitation."
    (and btw, the ticket status was changed to 'Solution Provided') eh ???
    Nothing gets me more upset than responses like that :(

    2. I've responded once more to the 'unsatisfactory/ imprecise' response given, and it appears I perhaps now have a 'Tier 2' guy. (Well, someone different).
    They have requested
    • a screen shot of the hardware configuration of the VM,
    • a tech report be sent to them
    so they can "check the issue internally".
    I've send both those off this morning, so we'll see how that goes.

    If the first response from Parallels was all I was afforded, I would be throwing them under the bus right now.
    As it stands, I'll let the second attempt play out and we'll see where we end up...

    Stay tuned :)
     
  12. RogerH6

    RogerH6 Kilo Poster

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    Thinking about it, I think when I was using more memory, it was with the 'old' Parallels back before they got rid of the full screen display option.
    "application limitation". Since Parallels is the 'application' in this regard, they need to rewrite it then.... :(
     
  13. MartJ

    MartJ Bit Poster

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    Im also waiting for resolution after sending screenshots and everything. Im running Catalina VM and right now its dog slow even ssh terminal is slow. Im running it fullscreen. Web based Rocketchat app for example does not even start. Also switching between windows is slow.
     
  14. karlemilnikka

    karlemilnikka Bit Poster

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    I could at least solve my Chrome issue by disabling hardware acceleration in Chrome's advanced settings.
     
  15. Queequeg

    Queequeg Bit Poster

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    I'm seeing the exact same issue on Parallels 16.1.3 running on a new Mac Pro (2019) with 16-core intel, 192GB ram and an
    AMD Radeon Pro Vega II Duo 32 GB. Although I can configure more than 256MB graphics memory for the VM, the Mojave VM only shows 256MB graphics memory. Making many games fail to start and some running at a snail's pace.
    I see that it has been over a year since the last post above. Has no correction of this problem ever been posted?
     
  16. KamalM2

    KamalM2

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    The same trouble is here with me. I can allocate more memory in parallels settings but the guest macOS 10.15 system is showing only 256mb was allocated... This is why?
     
    Last edited by a moderator: Feb 17, 2021
  17. MarkP31

    MarkP31 Bit Poster

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    Has noone resolved this issue successfully? I am struggling here with Version 16.0.1 trying to get Mojave to show up with more than 256mb graphics. I have the latest macbook pro intel, so year or so old, it has 64 gb ram and 8gb GPU, I can definitely power some extra video power but im limited to 256. I tried the VMWare Tools install suggestion too, but nothing works.

    Is there versions previous to Mojave like Lion or snow leopard that have no issues with GPU? is it limited to Mojave? Only reason im trying to do this is to save some 32 bit app support which.
     
  18. Queequeg

    Queequeg Bit Poster

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    Another year and the issue has still not been addressed by Parallels. As of 19 March, 2022 using the latest version of Parallels (17.1.1), the video graphics memory in a Mojave VM is limited to 256MB.
     
  19. Aries@PF

    Aries@PF Kilo Poster

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    So I never really. had a reason to check this, but after I did I felt a bit...betrayed?
    I didn't check ALL my VMs, but MacOS HS and newer seem to all have 256Mb of vRAM showing in the Guest. That is, except for the three newest ones that are having a weird graphical glitch (Big Sur+). The 11.6.7 Big Sur Guest showed some weird 22Mb entry in the screen, 12.4 Monterey shows 5Mb, and Ventura shows 64Mb. Having now looked all that up, I'm a bit miffed because if I was doing more than just tooling around, then there's NO WAY I'd be able to get anything done that depended on the GPU. I did test trying to run the GoG launcher and it's horrible. In fact, anything graphically moderate is horrible in that VM (now that it doesn't crash, but maybe that's WHY it was crashing?!?). I did manually install a game from the GoG library (offline installers) and the game crashed during launch due to lack of memory. Yeah, sounds like Parallels needs to do some reworking and I Don't mean releasing the 'fix' in the form of v18 (aka paid upgrade).
     
  20. Aries@PF

    Aries@PF Kilo Poster

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    I went through changing all my Hypervisors to Apple / non-adaptive and now both 11.x and 12.x show 22Mb of GPU RAM.
     

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