Hello,

I am experiencing a similar suspend/resume failure on Ubuntu 26.04.1
LTS, on a Dell XPS 13 9315.

Hardware and software

Laptop: Dell XPS 13 9315

CPU: Intel Core i7-1260U

Graphics: Intel Iris Xe, driver i915

BIOS: 1.41.0

Ubuntu: 26.04.1 LTS (Resolute)

Kernel versions tested: 7.0.0-38-generic, 7.0.0-31-generic, and
6.14.0-1019-oem

Problem
When I suspend the laptop, either by closing the lid or selecting Suspend, the 
screen remains black when I try to resume. I have to force a shutdown using the 
power button.

The problem occurs with all three kernel versions listed above.

The previous boot's kernel log ends with:

PM: suspend entry (s2idle)

I also see the following messages in the kernel log:

i915 ... Selective fetch area calculation failed in pipe A

intel-ipu6: IPU6 bridge init failed

I understand that these messages may not be the cause of the suspend
problem.

Could this be related to a kernel suspend/resume regression? Please
advise on how to collect any additional diagnostics needed.

Thank you.

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https://bugs.launchpad.net/bugs/2171538

Title:
  suspend/resume regression in kernel 7.0.0-38

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