macOS 10.12.6 VM stuck at 1024x768 resolution

Discussion in 'Mac OS X Guest OS Discussion' started by Obi-Wan, Oct 21, 2017.

  1. Elric

    Elric Parallels Developers

    Messages:
    1,656
    Hi,
    please check Guest's System Preferences -> Security&Privacy for whether Parallels Extensions are not blocked by HighSierra. In my test environment this solved the issue
     
  2. CURTH

    CURTH Bit Poster

    Messages:
    6
    No, there is no blocking happening within Security&Privacy. I leave that page open, install parallel extensions in the guest MAC HS machine and install finishes, no message in Security&Privacy, does the normal requires reboot, and nothing, problem still persists.
     
  3. CarlosG5

    CarlosG5 Bit Poster

    Messages:
    9
    I tried also the approach. Host OS is High Sierra. Guest OS is High Sierra. Parallel 13.1.1 - Build 43120. On the guess OS, I open Security & Privacy / General. There is not a message there that tells you that Paralllel Extension can't be installed or waiting for permissions. In fact, it is installed. Asked for reboot and then after the system reboots you can see the warning on the top screen, right size, asking to install the extension agains. It seems, the system installed but it just doesn't work somehow.
     
  4. rkulikov

    rkulikov Parallels Developers

    Messages:
    312
    > No, there is no blocking happening within Security&Privacy. I leave that page open, install parallel extensions in the guest MAC HS machine and install finishes, no message in Security&Privacy, does the normal requires reboot, and nothing, problem still persists.

    The bad thing with macOS is that if you leave Security&Privacy tab open and then try you install some kernel extension that pane for user consent with "Allow" button would not be shown. You have to close System Preferences and open it once again, go to Security&Privacy tab and only after that you'll see request to allow KEXT.

    Also there's an issue from Parallels Tools installer side. If you install Parallels Tools, press "Allow" button for "Parallels International GmbH" kernel extension, reboot the guest and notice that Tools still don't work - please, just try to install Parallels Tools once again. After the second attempt everything should work ok.
     
  5. Elric

    Elric Parallels Developers

    Messages:
    1,656
    I can also suggest a way to disable this apple's kext-consent verification in guest mac os:
    - Open the VM Configuration -> Hardware -> Boot Order -> Advanced and enter the line to BootFlags:
    "devices.mac.csr-active-config=0x267" (without quotes)
     
    Last edited: Nov 23, 2017
  6. RuC

    RuC Bit Poster

    Messages:
    5
    Ive got exactly the same issue. Ive just paid for Paralells in order to run a Mojave Virtual machine in Catalina. My Vitual-Mojave is stuck at 1024x768 resolution/
    Mojave resolution.jpg
     
  7. Elric

    Elric Parallels Developers

    Messages:
    1,656
    Hi
    Do you have Parallels Tools installed? it can be done via menu -> Actions -> Install Parallels Tools
     
  8. RuC

    RuC Bit Poster

    Messages:
    5
    Ah ! There we go, thank you ! I think its somewhat confusing/disingenuous of Parallels to call a free option'Parallel Tools' , & a secondly piece of nagware/paid-subscription 'parallels ToolBOX' it's almost as if they are hoping a certain number of poor souls accidentally buy something they didn't mean too
     
    Elric likes this.
  9. MichaelM92

    MichaelM92 Bit Poster

    Messages:
    16
    I have this issue, but with Big Sur Beta. I run the "Install Parallels Tools" and it runs without warning or issue, I reboot and it's like I didn't even install it...stuck on 1024x768...anybody able to get around this for Big Sur Beta?...thanks
     
  10. JorgeC10

    JorgeC10 Bit Poster

    Messages:
    1
    I have parallels tools installed and verified that they are running. But still only 1024 x 768.
    I have had the same results running both Catalina and Big Sur VMs.
     
  11. HonzaIl

    HonzaIl Bit Poster

    Messages:
    46
    This is known issue for Big SUr, discussed in many threads here. See: https://kb.parallels.com/en/125039
     

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