Black screen at login after updating to this kernel

[David Rutherford]

Dell Inspiron 5555 AMD A10 Laptop
Linux Mint Mate O/S

After updating the kernel I restarted the laptop. After entering my password and logging in the screen goes black with occasional flashes of, I guess i'd call it static.

The same thing happened with the previous kernel I installed, ending .87, when I was running Zorin OS.

After un-installing the system returns to opening as usual.

System:
  Kernel: 5.15.0-76-generic x86_64 bits (This is the kernel that is working correctly): 64 compiler: gcc v: 11.3.0 Desktop: MATE 1.26.0 wm: marco
    dm: LightDM Distro: Linux Mint 21.2 Victoria base: Ubuntu 22.04 jammy

Machine:
  Type: Portable System: Dell product: Inspiron 5555 v: A12 serial: <superuser required> Chassis:
    type: 8 v: A12 serial: <superuser required>
  Mobo: Dell model: 0CX84K v: A00 serial: <superuser required> UEFI: Dell v: A12
    date: 08/30/2016

CPU:
  Info: quad core model: AMD A10-8700P Radeon R6 10 Compute Cores 4C+6G bits: 64 type: MT MCP
    arch: Excavator rev: 1 cache: L1: 320 KiB L2: 2 MiB
  Speed (MHz): avg: 2776 high: 3053 min/max: 1300/1800 boost: enabled cores: 1: 2673 2: 2680
    3: 3053 4: 2700 bogomips: 14374
  Flags: avx avx2 ht lm nx pae sse sse2 sse3 sse4_1 sse4_2 sse4a ssse3 svm
Graphics:
  Device-1: AMD Wani [Radeon R5/R6/R7 Graphics] vendor: Dell driver: amdgpu v: kernel ports:
    active: eDP-1 empty: HDMI-A-1 bus-ID: 00:01.0 chip-ID: 1002:9874
  Device-2: AMD Sun XT [Radeon HD 8670A/8670M/8690M / R5 M330 M430 Radeon 520 Mobile]
    vendor: Dell driver: radeon v: kernel pcie: speed: 2.5 GT/s lanes: 4 bus-ID: 03:00.0
    chip-ID: 1002:6660
  Device-3: Microdia Integrated Webcam HD type: USB driver: uvcvideo bus-ID: 2-4:3
    chip-ID: 0c45:6712
  Display: x11 server: X.Org v: 1.21.1.4 compositor: marco v: 1.26.0 driver: X:
    loaded: ati,radeon unloaded: amdgpu,fbdev,modesetting,vesa gpu: amdgpu display-ID: :0 screens: 1
  Screen-1: 0 s-res: 1366x768 s-dpi: 96
  Monitor-1: eDP res: 1366x768 dpi: 112 diag: 354mm (13.9")
  OpenGL: renderer: AMD Radeon R6 Graphics (carrizo LLVM 15.0.7 DRM 3.42 5.15.0-76-generic)
    v: 4.6 Mesa 23.0.4-0ubuntu1~22.04.1 direct render: Yes

I don't have a lot of experience with reporting errors so I hope this helps!

[David Rutherford (d8ona675)]

Just in case I should add the kernels that caused the problem for my laptop are Linux kernel 5.15.0-88.98, and 5.15.0-87

[Mario Limonciello (superm1)]

Can you please share the kernel log from a failed kernel? To get it:
1) Boot the failed kernel and reproduce failure
2) Boot a good kernel
3) run "journalctl -k -b-1 > journal_bad.txt"
4) run "journalctl -k > journal_good.txt"

Then attach both of those to this bug.

[David Rutherford (d8ona675)]

Hope these help!

[Mario Limonciello (superm1)]

Your "good" journal is with nomodeset. Can I see the log from a good journal without adding a module parameter? Like an older kernel that worked?

[David Rutherford (d8ona675)]

I assume you mean to run this

journalctl -k > journal_good.txt

from the working journal?

[Mario Limonciello (superm1)]

OK thanks. Nothing was obvious in the log differences. We need to narrow down intermediate kernel releases to identify what's changed to cause this regression.

Can you please test these binaries from those. Capture the journals for each and note if they worked or didn't. Hopefully we'll get closer.

https://launchpad.net/~canonical-kernel-team/+archive/ubuntu/ppa/+build/26313281
https://launchpad.net/~canonical-kernel-team/+archive/ubuntu/ppa2/+build/26398561
https://launchpad.net/~canonical-kernel-team/+archive/ubuntu/ppa/+build/26405786
https://launchpad.net/~canonical-kernel-team/+archive/ubuntu/ppa2/+build/26504338
https://launchpad.net/~canonical-kernel-team/+archive/ubuntu/ppa2/+build/26504338

[David Rutherford (d8ona675)]

Happy to. The page they link to isn't obvious how to download and
install tho. Could you send some instructions?

On 8/11/23 05:54, Mario Limonciello wrote:
> OK thanks. Nothing was obvious in the log differences. We need to
> narrow down intermediate kernel releases to identify what's changed to
> cause this regression.
>
> Can you please test these binaries from those. Capture the journals for
> each and note if they worked or didn't. Hopefully we'll get closer.
>
> https://launchpad.net/~canonical-kernel-team/+archive/ubuntu/ppa/+build/26313281
> https://launchpad.net/~canonical-kernel-team/+archive/ubuntu/ppa2/+build/26398561
> https://launchpad.net/~canonical-kernel-team/+archive/ubuntu/ppa/+build/26405786
> https://launchpad.net/~canonical-kernel-team/+archive/ubuntu/ppa2/+build/26504338
> https://launchpad.net/~canonical-kernel-team/+archive/ubuntu/ppa2/+build/26504338
>

[Mario Limonciello (superm1)]

Each page you'll need the following binaries:
Linux image unsigned
Linux modules
Linux modules extra

Download those 3 and install them with dpkg.

Note: none of these are signed for secure boot. If you have that enabled, disable it for this experiment.

[Launchpad Janitor (janitor)]

[Expired for linux (Ubuntu) because there has been no activity for 60 days.]