[Bug 2141216] Re: Suspend/resume broken after latest Ubuntu update on AMD RX 960 XT (andgpu SMU resume failure)

I was able to install your two packages today but unfortunately its not good news. Secure boot was already disables from my last kernel attempt so that was no problem, and your kernel was running as per..
mike-cooper@Max:~$ uname -a
Linux Max 6.17.0-15-generic #15afaina1-Ubuntu SMP PREEMPT_DYNAMIC Fri Feb 20 10:24:49 UTC 20 x86_64 GNU/Linux

I forced a suspend, screen went black, but the only way I could recover
was using the hard off/on switch on the computer case. Not sure what
test I should have run for you, but if we try again send me a list and
I'll send text files of results back to you.

Unfortunately your kernel had another problem that I struggled with
quite a bit when I first started Max up on Ununtu last September, and
that is that I couldn't get ethernet to work, I could only link to
internet via wifi. After a lot of time on that issue it turned out my
only fix was loading Realtek's r8125 driver instead of your r8169.
Don't know if you call that a bug or not since once you figure it out it
isn't hard to find the right driver, but the folks who work on r8169
should be aware that is doesn't work on some systems.

Finally I had a scary issue getting back to 6.17.0-14 because, on reboot. Whatever I did I couldn't access GRUB, I'd go directly to BIOS from esc. Turned out on my system the the file is GRUB_TIMEOUT_STYLE=hidden and GRUB_TIMEOUT=0 so I had to use.
sudo grub-set-default 'Advanced options for Ubuntu>Ubuntu, with Linux 6.17.0-14-generic' then reboot which may not be recommended but works nicely.

Let me know what else I can do to help out. Happy to be back on -14 for now where ethernet is working and I only need to turn Max on and off manually.
Mike

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https://bugs.launchpad.net/bugs/2141216

Title:
Suspend/resume broken after latest Ubuntu update on AMD RX 960 XT
(andgpu SMU resume failure)

Status in linux package in Ubuntu:
New
Status in linux source package in Questing:
Triaged

Bug description:
Summary: Suspend/resume broken after latest Ubuntu update on AMD RX
What Happens: After suspend, system wakes but display remains black. VT switching (Ctrl–Alt–F3) does not work. Only hard reboot recovers.
Regression: This started immediately after a recent Ubuntu update
Hardware: AMD RX 960 XT (Nav 44) + AMD Raphael iGPU
Relevant logs: SMU resume failure. GPU ring timeouts, GPU ring timeouts, devcoredump created (already captured by ubuntu-bug tool)

ProblemType: Bug
DistroRelease: Ubuntu 25.10
Package: linux-image-6.17.0-12-generic 6.17.0-12.12
ProcVersionSignature: Ubuntu 6.17.0-12.12-generic 6.17.2
Uname: Linux 6.17.0-12-generic x86_64
ApportVersion: 2.33.1-0ubuntu3
Architecture: amd64
CasperMD5CheckResult: unknown
CurrentDesktop: ubuntu:GNOME
Date: Sat Feb 7 17:54:17 2026
InstallationDate: Installed on 2025-10-20 (110 days ago)
InstallationMedia: Ubuntu 25.10 "Questing Quokka" - Release amd64 (20251007)
MachineType: ASUS System Product Name
ProcEnviron:
LANG=en_US.UTF-8
PATH=(custom, no user)
SHELL=/bin/bash
TERM=xterm-256color
XDG_RUNTIME_DIR=<set>
ProcFB: 0 amdgpudrmfb
ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-6.17.0-12-generic root=UUID=3412c7b3-e116-4927-b603-3da7641a647b ro quiet splash mem_sleep_default=s2idle crashkernel=2G-4G:320M,4G-32G:512M,32G-64G:1024M,64G-128G:2048M,128G-:4096M vt.handoff=7
RelatedPackageVersions:
firmware-sof N/A
linux-firmware 20250901.git993ff19b-0ubuntu1.6
SourcePackage: linux
UpgradeStatus: No upgrade log present (probably fresh install)
dmi.bios.date: 06/11/2025
dmi.bios.release: 32.65
dmi.bios.vendor: American Megatrends Inc.
dmi.bios.version: 3265
dmi.board.asset.tag: Default string
dmi.board.name: TUF GAMING B650E-E WIFI
dmi.board.vendor: ASUSTeK COMPUTER INC.
dmi.board.version: Rev 1.xx
dmi.chassis.asset.tag: Default string
dmi.chassis.type: 3
dmi.chassis.vendor: Default string
dmi.chassis.version: Default string
dmi.modalias: dmi:bvnAmericanMegatrendsInc.:bvr3265:bd06/11/2025:br32.65:svnASUS:pnSystemProductName:pvrSystemVersion:rvnASUSTeKCOMPUTERINC.:rnTUFGAMINGB650E-EWIFI:rvrRev1.xx:cvnDefaultstring:ct3:cvrDefaultstring:skuSKU:
dmi.product.family: To be filled by O.E.M.
dmi.product.name: System Product Name
dmi.product.sku: SKU
dmi.product.version: System Version
dmi.sys.vendor: ASUS

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