Error with Ubuntu 20

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David100

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Hi everyone! I've just installed Ubuntu 20.04 on my Parallels because I need it to run ROS. When I try to update the repository or when I install programs (like, for example, Pycharm), the next time I start the VM, it doesn't work anymore and I must uninstall it. I really need support because I need it for my master thesis. This is the error that I get:

Press ESCAPE for boot options EPI stub: Booting Linux Kernel.
EPI stub: EPI_RNG_PROTOCOL unavailable
EFI stub: ERROR: FIRMARE BUG: kernel image not aligned on 64k boundary
PI stub: ERROR: FIRMARE BUG: Image SS over laps adjacent EFI memory region
EFI stub: Using DIB from configuration table
EFI stub: Exiting boot services and installing virtual address nap.

Thank you! Best regards.
 
Best answer
M
It seems the problem is with the Linux kernel 5.13.0-35. I could use the VM again using kernel 5.13.0-25. It can be changed at startup in "advanced options for ubuntu". I still had the old kernel after the breaking kernel update, but it seems for new VMs there is only the newer kernel.
The error message still appears, but the vm starts.
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Confirmed M1/ARM, Same issue with Ubuntu 20.04 LTS ... kernels 5.4.0-90 and 5.4.0-100 are OK, but 5.4.0-104 breaks with EFI_RNG_PROTOCOL
Note that the same EFI_RNG_PROTOCOL message appeared in the previous kernels, but 5.4.0.104 doesn't gracefully continue. Boot switches avoiding EFI fail.
 
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Confirmed M1/ARM, Same issue with Ubuntu 20.04 LTS ... kernels 5.4.0-90 and 5.4.0-100 are OK, but 5.4.0-104 breaks with EFI_RNG_PROTOCOL

Both on Ubuntu 20.04.2 Server and Desktop.
 
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DebasmitaM@Parallels said:
Hello, it is an ongoing issue. The cases have been escalated to developers, and they're researching the ways how to address them. As a temporary workaround please create a new Linux Ubuntu VM from appliance and do not update it. Alternatively, feel free to downgrade the kernel to 5.13.0-25.
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I just got the new update for parallels desktop. I am wondering whether it resolves the issue or not. How can I know which release addresses the issue. Thanks
 
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MikhailU@Parallels said:
Hello!
First, thank you a lot for reporting the issue to us.
We've reproduced the issue locally and involved our colleagues from the R & D department to look at the issue and try fixing it.
We'll let you know once we have any updates!
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Hi, i still get the same error even after changing the kernel. What am i supposed to do? I am sadly on the verge of canceling my Parallels Desktop subscription.
 
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@LeandrinL , thank you for letting us know.

As we can see, there is a recently submitted support ticket where our Tier-1 team has suggested the steps.

We've taken the ticket in the second line in case these steps don't help, and we could take a closer look at the case.

Thanks!
 
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Is the problem back?
I tried upgrading to 22.04.1LTS from 20.04LTS and when it boots it says `EFI stub: Exiting boot services` but without the `and installing virtual address nap` part.
This is happening with kernel 5.15.0-46. (The workaround to boot with kernel 5.13.0-40-generic works.)
​
 
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