PU6 bridge init failing on XPS 13 Plus after Ubuntu 26.04 upgrade

I upgraded to Ubuntu Resolute (26.04) on a Dell XPS 13 Plus and now the camera and built-in microphone don't work.

System info:

• Dell XPS 9320 (13 Plus)
• Ubuntu Resolute (26.04)
• Kernel: 6.8.0-45-generic
• Intel Raptor Lake processor

What I've tried:

1. Installed intel-ipu6-dkms - failed to compile: v4l2_find_nearest_size_conditional function doesn't exist in kernel 6.8.0-45
2. Added ppa:oem-solutions-group/intel-ipu6 and installed linux-modules-ipu6-generic - no change
3. Blacklisted mei_vsc and mei_vsc_hwem modules - still failing

Current error:

[   15.985162] pci 0000:00:05.0: deferred probe pending: intel-ipu6: IPU6 bridge init failed

Audio devices load but produce no sound. Camera app gets no device.

dmesg output:

[    3.106500] intel-ipu6 0000:00:05.0: enabling device (0000 -> 0002)
[   15.985162] pci 0000:00:05.0: deferred probe pending: intel-ipu6: IPU6 bridge init failed

Is this a known issue with Resolute on XPS 13 Plus? What's the fix?