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#1 2020-07-04 21:48:39

olbo
Member
Registered: 2020-03-01
Posts: 9

[SOLVED] Can't boot from live media

I have recently upgraded my motherboard and I am now unable to boot from the Live USB I created - I assume it's an issue with my BIOS settings but I am not sure exactly what.
The install media freezes and does not continue, I am not sure how best to debug this behaviour.

I have uploaded a video recording of the boot sequence if my explanation isn't good enough: https://youtu.be/0wd36mMK0ys

Important hardware to note:

- AMD Ryzen 3950x
- Gigabyte X570 Aorus Master
- Radeon RX5700 XT

Any pointers to help me debug this would be appreciated

Last edited by olbo (2020-07-05 19:45:44)

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#2 2020-07-04 22:05:30

d_fajardo
Member
Registered: 2017-07-28
Posts: 1,563

Re: [SOLVED] Can't boot from live media

Did you verify the signature of the image before use?
How did you write the image to the USB stick?

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#3 2020-07-04 22:13:34

olbo
Member
Registered: 2020-03-01
Posts: 9

Re: [SOLVED] Can't boot from live media

Yes, the usb is fine it was validated. I can use the USB on my laptop and it boots OK. I wrote the iso using dd
I also reflashed the latest bios from gigabyte but it does not help with this problem

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#4 2020-07-04 22:19:10

jasonwryan
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From: .nz
Registered: 2009-05-09
Posts: 30,424
Website

Re: [SOLVED] Can't boot from live media

So the system is booting according to that video. What is the last message printed on the screen?


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#5 2020-07-04 22:22:29

d_fajardo
Member
Registered: 2017-07-28
Posts: 1,563

Re: [SOLVED] Can't boot from live media

How about Secure Boot? Have you checked if Secure Boot is disabled in the BIOS?

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#6 2020-07-04 22:35:38

olbo
Member
Registered: 2020-03-01
Posts: 9

Re: [SOLVED] Can't boot from live media

CSM Support, secure and fast boot are disabled. Above 4G Decoding is enabled - everything else is stock

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#7 2020-07-04 22:48:16

olbo
Member
Registered: 2020-03-01
Posts: 9

Re: [SOLVED] Can't boot from live media

jasonwryan wrote:

So the system is booting according to that video. What is the last message printed on the screen?

The system gets stuck regardless of the last message. In this particular video the last message is "Finished Rebuild Journal Catalog"

Interestingly, after scrubbing back though the video I did notice some other messages of interest:

kvm: disabled by bios
AMD-Vi: Completion-Wait loop timed out
iommu ivhd0: AMD-Vi: Event logged [IOTLB_INV_TIMEOUT device=0x:00.0 address=xxxx

I don't believe this one is an issue, since it's just my WiFi, but it's a warning non-the-less

bcma: Unsupported SPROM revision: 11
bcma-pci-bridge 0000... bus0: No SPROM available
hid-generic xxx: No inputs registered, leaving

Last edited by olbo (2020-07-04 22:49:17)

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#8 2020-07-05 09:01:37

d_fajardo
Member
Registered: 2017-07-28
Posts: 1,563

Re: [SOLVED] Can't boot from live media

I found this page with issue similar to yours. It can be worth a look.
This really should be a straightforward install particularly with a new MB so you can try some other live distro to see if it boots just to confirm it's not a MB problem.

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#9 2020-07-05 09:17:56

olbo
Member
Registered: 2020-03-01
Posts: 9

Re: [SOLVED] Can't boot from live media

Thanks, it seems to verify what I discovered late last night. I installed on a different machine and swapped out the hard-drive, added `pci=noats` and was able to boot successfully. I actually think it's a problem with my graphics card.

I did not know how to edit the installer boot arguments, I should have thought of that first! Many thanks for the link @d_fajaedo

---

Is using `pci=noats` as a permanent solution a bad idea? the PCIe ATS seems an important feature of PCIe: https://composter.com.ua/documents/ats_r1.1_26Jan09.pdf

---

I do not kernel panic like in the post you provided, I see the following error:

fb0: switching to amdgpudrmfb from efi vga

Last edited by olbo (2020-07-05 09:43:52)

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#10 2020-07-05 09:42:05

d_fajardo
Member
Registered: 2017-07-28
Posts: 1,563

Re: [SOLVED] Can't boot from live media

olbo wrote:

Is using `pci=noats` as a permanent solution a bad idea?

I don't have the answer. If it's something you're really curious, perhaps you can just raise another thread with the question.

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#11 2020-07-05 15:06:27

Lone_Wolf
Member
From: Netherlands, Europe
Registered: 2005-10-04
Posts: 11,868

Re: [SOLVED] Can't boot from live media

Try enabling SVM and IOMMU in 'Advanced CPU Settings' section of the firmware.


Disliking systemd intensely, but not satisfied with alternatives so focusing on taming systemd.


(A works at time B)  && (time C > time B ) ≠  (A works at time C)

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#12 2020-07-05 19:45:28

olbo
Member
Registered: 2020-03-01
Posts: 9

Re: [SOLVED] Can't boot from live media

I am going to mark this as resolved as I got to the root cause of this problem and I'm now able to boot without the additional `pci=noats`

A little while ago I re-flashed my VBIOS for my RX5700 to the XT variant whilst giving a performance boost, the kernel drivers expected a different set of addresses for the card meaning it cant handover. I re-flashed the vanilla VBIOS and it's working as it should.

Many thanks for your help. I hope this is useful for somebody else.

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