I tried mainline kernels in Ubuntu 22.10:

https://kernel.ubuntu.com/~kernel-ppa/mainline/v6.0.3/ - resume now works, but both resume and suspend are really slow (20+ seconds)

https://kernel.ubuntu.com/~kernel-ppa/mainline/v6.1-rc1/ - works as well, without the long delay

Probably something was finally fixed in the kernel.

Note: mainline 6.x kernels also log the following error:

[   49.449840] Freezing user space processes ... (elapsed 0.002 seconds) done.
[   49.452576] OOM killer disabled.
[   49.452578] Freezing remaining freezable tasks ... (elapsed 2.760 seconds) done.
[   52.216297] printk: Suspending console(s) (use no_console_suspend to debug)
[   52.594630] ACPI: EC: interrupt blocked
[   52.637203] ================================================================================
[   52.637205] UBSAN: array-index-out-of-bounds in /home/kernel/COD/linux/drivers/acpi/acpica/dswexec.c:401:12
[   52.637208] index -1 is out of range for type 'acpi_operand_object *[9]'
[   52.637210] CPU: 0 PID: 240 Comm: kworker/u16:4 Tainted: G     U     OE      6.1.0-060100rc1-generic #202210162332
[   52.637214] Hardware name: ASUSTeK COMPUTER INC. ZenBook UX393EA_UX393EA/UX393EA, BIOS UX393EA.312 04/22/2022
[   52.637216] Workqueue: events_unbound async_run_entry_fn
[   52.637224] Call Trace:
[   52.637226]  <TASK>
[   52.637229]  show_stack+0x4e/0x61
[   52.637234]  dump_stack_lvl+0x4a/0x6f
[   52.637241]  dump_stack+0x10/0x18
[   52.637245]  ubsan_epilogue+0x9/0x43
[   52.637249]  __ubsan_handle_out_of_bounds.cold+0x42/0x47
[   52.637253]  acpi_ds_exec_end_op+0x1ca/0x828
[   52.637259]  acpi_ps_parse_loop+0x58d/0x678
[   52.637263]  acpi_ps_parse_aml+0x2e6/0x59e
[   52.637265]  acpi_ps_execute_method+0x241/0x315
[   52.637269]  acpi_ns_evaluate+0x34c/0x515
[   52.637273]  acpi_evaluate_object+0x212/0x3a5
[   52.637275]  __acpi_power_off+0x26/0x70
[   52.637279]  acpi_power_off_unlocked+0x54/0x90
[   52.637283]  acpi_power_off_list.isra.0+0x43/0xa0
[   52.637287]  acpi_power_transition+0xab/0x100
[   52.637291]  acpi_device_set_power+0x319/0x470
[   52.637295]  ? _raw_spin_lock_irqsave+0xe/0x20
[   52.637298]  acpi_pci_set_power_state+0x98/0x150
[   52.637303]  pci_set_power_state+0x9f/0x220
[   52.637306]  ? acpi_pci_choose_state+0x26/0x50
[   52.637309]  pci_prepare_to_sleep+0x7e/0xd0
[   52.637312]  pci_pm_suspend_noirq+0x1f7/0x2c0
[   52.637316]  ? pci_pm_suspend_late+0x50/0x50
[   52.637319]  dpm_run_callback+0x63/0x160
[   52.637322]  __device_suspend_noirq+0x8f/0x290
[   52.637325]  async_suspend_noirq+0x23/0x70
[   52.637327]  async_run_entry_fn+0x30/0x130
[   52.637331]  process_one_work+0x222/0x400
[   52.637334]  worker_thread+0x50/0x3e0
[   52.637337]  ? process_one_work+0x400/0x400
[   52.637339]  kthread+0xe6/0x110
[   52.637342]  ? kthread_complete_and_exit+0x20/0x20
[   52.637344]  ret_from_fork+0x1f/0x30
[   52.637350]  </TASK>
[   52.637351] ================================================================================
[   60.734902] ACPI: EC: interrupt unblocked
[   61.575520] pcieport 10000:e0:1d.0: can't derive routing for PCI INT A
[   61.575528] nvme 10000:e1:00.0: PCI INT A: no GSI
[   61.576151] i915 0000:00:02.0: [drm] GuC firmware i915/tgl_guc_70.1.1.bin version 70.1.1
[   61.576157] i915 0000:00:02.0: [drm] HuC firmware i915/tgl_huc_7.9.3.bin version 7.9.3
[   61.580528] i915 0000:00:02.0: [drm] HuC authenticated
[   61.580535] i915 0000:00:02.0: [drm] GuC submission disabled
[   61.580537] i915 0000:00:02.0: [drm] GuC SLPC disabled
[   61.580970] nvme nvme0: 8/0/0 default/read/poll queues
[   61.905786] mei_hdcp 0000:00:16.0-b638ab7e-94e2-4ea2-a552-d1c54b627f04: bound 0000:00:02.0 (ops i915_hdcp_component_ops [i915])
[   61.906125] OOM killer enabled.
[   61.906128] Restarting tasks ... 
[   61.906449] mei_pxp 0000:00:16.0-fbf6fcf1-96cf-4e2e-a6a6-1bab8cbe36b1: bound 0000:00:02.0 (ops i915_pxp_tee_component_ops [i915])
[   61.922392] done.
[   61.922431] random: crng reseeded on system resumption
[   61.935746] thermal thermal_zone6: failed to read out thermal zone (-61)
[   61.949978] PM: suspend exit