I have reproduced system freeze just now. Here is the interesting snippet of syslog. May be it will be usefull

Apr 14 15:21:36 vitworkstation systemd[1609]: Started Application launched by gnome-shell.
Apr 14 15:21:36 vitworkstation systemd[1609]: Started snap.opera.opera.8903073f-1658-46ab-82a5-d6f88f02bf29.scope.
Apr 14 15:21:36 vitworkstation dbus-daemon[1630]: apparmor="DENIED" operation="dbus_method_call"  bus="session" path="/org/freedesktop/secrets" interface="org.freedesktop.DBus.Properties" member="GetAll" mask="send" name="org.freedesktop.secrets" pid=14002 label="snap.opera.opera" peer_pid=1629 peer_label="unconfined"
Apr 14 15:21:36 vitworkstation opera[13928]: Theme parsing error: gtk.css:1422:23: 'font-feature-settings' is not a valid property name
Apr 14 15:21:36 vitworkstation opera[13928]: Theme parsing error: gtk.css:3308:25: 'font-feature-settings' is not a valid property name
Apr 14 15:21:36 vitworkstation opera[13928]: Theme parsing error: gtk.css:3770:23: 'font-feature-settings' is not a valid property name
Apr 14 15:21:36 vitworkstation kernel: [ 4562.959955] audit: type=1107 audit(1681474896.430:738): pid=758 uid=103 auid=4294967295 ses=4294967295 subj=unconfined msg='apparmor="DENIED" operation="dbus_method_call"  bus="system" path="/" interface="org.freedesktop.DBus.ObjectManager" member="GetManagedObjects" mask="send" name="org.bluez" pid=13928 label="snap.opera.opera" peer_pid=757 peer_label="unconfined"
Apr 14 15:21:36 vitworkstation kernel: [ 4562.959955]  exe="/usr/bin/dbus-daemon" sauid=103 hostname=? addr=? terminal=?'
Apr 14 15:21:36 vitworkstation kernel: [ 4562.980145] audit: type=1400 audit(1681474896.454:739): apparmor="DENIED" operation="open" class="file" profile="snap.opera.opera" name="/etc/vulkan/implicit_layer.d/" pid=14036 comm="opera" requested_mask="r" denied_mask="r" fsuid=1000 ouid=0
Apr 14 15:21:36 vitworkstation kernel: [ 4562.980255] audit: type=1400 audit(1681474896.454:740): apparmor="DENIED" operation="open" class="file" profile="snap.opera.opera" name="/etc/vulkan/implicit_layer.d/" pid=14036 comm="opera" requested_mask="r" denied_mask="r" fsuid=1000 ouid=0
Apr 14 15:21:36 vitworkstation kernel: [ 4562.980357] audit: type=1400 audit(1681474896.454:741): apparmor="DENIED" operation="open" class="file" profile="snap.opera.opera" name="/etc/vulkan/explicit_layer.d/" pid=14036 comm="opera" requested_mask="r" denied_mask="r" fsuid=1000 ouid=0
Apr 14 15:21:36 vitworkstation kernel: [ 4562.980455] audit: type=1400 audit(1681474896.454:742): apparmor="DENIED" operation="open" class="file" profile="snap.opera.opera" name="/etc/vulkan/icd.d/" pid=14036 comm="opera" requested_mask="r" denied_mask="r" fsuid=1000 ouid=0
Apr 14 15:21:36 vitworkstation kernel: [ 4563.048510] audit: type=1326 audit(1681474896.522:743): auid=1000 uid=1000 gid=1000 ses=3 subj=snap.opera.opera pid=14036 comm="opera" exe="/snap/opera/227/usr/lib/x86_64-linux-gnu/opera/opera" sig=0 arch=c000003e syscall=312 compat=0 ip=0x7fefbf58d539 code=0x50000
Apr 14 15:21:36 vitworkstation opera_opera.desktop[13928]: [13928:13928:0414/152136.544268:ERROR:url_pattern_set.cc(287)] Invalid url pattern: chrome://startpage/
Apr 14 15:21:36 vitworkstation opera_opera.desktop[13928]: [13928:13928:0414/152136.544408:ERROR:url_pattern_set.cc(287)] Invalid url pattern: chrome://startpage/
Apr 14 15:21:36 vitworkstation opera_opera.desktop[13928]: [13928:13928:0414/152136.544450:ERROR:url_pattern_set.cc(287)] Invalid url pattern: chrome://startpage/
Apr 14 15:21:36 vitworkstation opera_opera.desktop[13928]: [13928:14026:0414/152136.549701:ERROR:partner_bookmarks_utils.cc(263)] Unable to read partner speeddials file.
Apr 14 15:21:36 vitworkstation kernel: [ 4563.168447] audit: type=1326 audit(1681474896.642:744): auid=1000 uid=1000 gid=1000 ses=3 subj=snap.opera.opera pid=14127 comm="opera" exe="/snap/opera/227/usr/lib/x86_64-linux-gnu/opera/opera" sig=0 arch=c000003e syscall=330 compat=0 ip=0x7fb3a0e4e4e7 code=0x50000
Apr 14 15:21:36 vitworkstation kernel: [ 4563.169815] audit: type=1326 audit(1681474896.642:745): auid=1000 uid=1000 gid=1000 ses=3 subj=snap.opera.opera pid=14128 comm="opera" exe="/snap/opera/227/usr/lib/x86_64-linux-gnu/opera/opera" sig=0 arch=c000003e syscall=330 compat=0 ip=0x7fb3a0e4e4e7 code=0x50000
Apr 14 15:21:36 vitworkstation kernel: [ 4563.301095] audit: type=1326 audit(1681474896.774:746): auid=1000 uid=1000 gid=1000 ses=3 subj=snap.opera.opera pid=14144 comm="opera" exe="/snap/opera/227/usr/lib/x86_64-linux-gnu/opera/opera" sig=0 arch=c000003e syscall=330 compat=0 ip=0x7fb3a0e4e4e7 code=0x50000
Apr 14 15:21:36 vitworkstation kernel: [ 4563.305901] audit: type=1326 audit(1681474896.778:747): auid=1000 uid=1000 gid=1000 ses=3 subj=snap.opera.opera pid=14145 comm="opera" exe="/snap/opera/227/usr/lib/x86_64-linux-gnu/opera/opera" sig=0 arch=c000003e syscall=330 compat=0 ip=0x7fb3a0e4e4e7 code=0x50000
Apr 14 15:21:37 vitworkstation opera_opera.desktop[13928]: [13928:13928:0414/152137.587636:ERROR:CONSOLE(0)] "Unchecked runtime.lastError: Could not establish connection. Receiving end does not exist.", source: chrome://startpage/ (0)
Apr 14 15:21:39 vitworkstation opera_opera.desktop[13928]: [13928:14025:0414/152139.333744:ERROR:udev_watcher.cc(98)] Failed to begin udev enumeration.
Apr 14 15:21:42 vitworkstation kernel: [ 4569.366541] kauditd_printk_skb: 1041 callbacks suppressed
Apr 14 15:21:42 vitworkstation kernel: [ 4569.366549] audit: type=1326 audit(1681474902.838:767): auid=1000 uid=1000 gid=1000 ses=3 subj=snap.opera.opera pid=14527 comm="opera" exe="/snap/opera/227/usr/lib/x86_64-linux-gnu/opera/opera" sig=0 arch=c000003e syscall=330 compat=0 ip=0x7fb3a0e4e4e7 code=0x50000
Apr 14 15:21:43 vitworkstation nautilus[13876]: Could not delete '.meta.isrunning': No such file or directory
Apr 14 15:21:46 vitworkstation wpa_supplicant[796]: wlp4s0: CTRL-EVENT-SIGNAL-CHANGE above=0 signal=-75 noise=-99 txrate=27000
Apr 14 15:21:50 vitworkstation kernel: [ 4572.280230] [drm:amdgpu_dm_commit_planes [amdgpu]] *ERROR* Waiting for fences timed out!
Apr 14 15:21:50 vitworkstation kernel: [ 4577.399993] [drm:amdgpu_job_timedout [amdgpu]] *ERROR* ring sdma0 timeout, signaled seq=114331, emitted seq=114333
Apr 14 15:21:50 vitworkstation kernel: [ 4577.400263] [drm:amdgpu_job_timedout [amdgpu]] *ERROR* Process information: process opera pid 14036 thread opera:cs0 pid 14048
Apr 14 15:21:50 vitworkstation kernel: [ 4577.400492] amdgpu 0000:05:00.0: amdgpu: GPU reset begin!
Apr 14 15:21:50 vitworkstation kernel: [ 4577.401771] amdgpu 0000:05:00.0: AMD-Vi: Event logged [IO_PAGE_FAULT domain=0x0000 address=0x110897b40 flags=0x0070]
Apr 14 15:21:50 vitworkstation kernel: [ 4577.401793] amdgpu 0000:05:00.0: AMD-Vi: Event logged [IO_PAGE_FAULT domain=0x0000 address=0x110897b60 flags=0x0070]
Apr 14 15:21:50 vitworkstation kernel: [ 4577.401810] amdgpu 0000:05:00.0: AMD-Vi: Event logged [IO_PAGE_FAULT domain=0x0000 address=0x1108c0000 flags=0x0070]
Apr 14 15:21:50 vitworkstation kernel: [ 4577.401826] amdgpu 0000:05:00.0: AMD-Vi: Event logged [IO_PAGE_FAULT domain=0x0000 address=0x110897b80 flags=0x0070]
Apr 14 15:21:50 vitworkstation kernel: [ 4577.401841] amdgpu 0000:05:00.0: AMD-Vi: Event logged [IO_PAGE_FAULT domain=0x0000 address=0x110897ba0 flags=0x0070]
Apr 14 15:21:50 vitworkstation kernel: [ 4577.401855] amdgpu 0000:05:00.0: AMD-Vi: Event logged [IO_PAGE_FAULT domain=0x0000 address=0x110897bc0 flags=0x0070]
Apr 14 15:21:50 vitworkstation kernel: [ 4577.401870] amdgpu 0000:05:00.0: AMD-Vi: Event logged [IO_PAGE_FAULT domain=0x0000 address=0x1108c0000 flags=0x0070]
Apr 14 15:21:50 vitworkstation gnome-shell[1817]: libinput error: event8  - ELAN0504:01 04F3:312A Touchpad: kernel bug: Touch jump detected and discarded.
Apr 14 15:21:50 vitworkstation gnome-shell[1817]: See https://wayland.freedesktop.org/libinput/doc/1.20.0/touchpad-jumping-cursors.html for details
Apr 14 15:21:50 vitworkstation kernel: [ 4577.519426] [drm] free PSP TMR buffer
Apr 14 15:21:51 vitworkstation kernel: [ 4577.554800] CPU: 0 PID: 13871 Comm: kworker/u32:2 Not tainted 5.19.0-38-generic #39~22.04.1-Ubuntu
Apr 14 15:21:51 vitworkstation kernel: [ 4577.554809] Hardware name: Acer Aspire A515-43/Grumpy_PK, BIOS V1.07 12/04/2019
Apr 14 15:21:51 vitworkstation kernel: [ 4577.554813] Workqueue: amdgpu-reset-dev drm_sched_job_timedout [gpu_sched]
Apr 14 15:21:51 vitworkstation kernel: [ 4577.554830] Call Trace:
Apr 14 15:21:51 vitworkstation kernel: [ 4577.554833]  <TASK>
Apr 14 15:21:51 vitworkstation kernel: [ 4577.554837]  show_stack+0x52/0x69
Apr 14 15:21:51 vitworkstation kernel: [ 4577.554848]  dump_stack_lvl+0x49/0x6d
Apr 14 15:21:51 vitworkstation kernel: [ 4577.554856]  dump_stack+0x10/0x18
Apr 14 15:21:51 vitworkstation kernel: [ 4577.554862]  amdgpu_do_asic_reset+0x2b/0x441 [amdgpu]
Apr 14 15:21:51 vitworkstation kernel: [ 4577.555455]  amdgpu_device_gpu_recover_imp.cold+0x4e4/0x7e1 [amdgpu]
Apr 14 15:21:51 vitworkstation kernel: [ 4577.556046]  amdgpu_job_timedout+0x15e/0x190 [amdgpu]
Apr 14 15:21:51 vitworkstation kernel: [ 4577.556553]  ? finish_task_switch.isra.0+0x84/0x290
Apr 14 15:21:51 vitworkstation kernel: [ 4577.556563]  drm_sched_job_timedout+0x6d/0x120 [gpu_sched]
Apr 14 15:21:51 vitworkstation kernel: [ 4577.556574]  process_one_work+0x21f/0x400
Apr 14 15:21:51 vitworkstation kernel: [ 4577.556581]  worker_thread+0x50/0x3f0
Apr 14 15:21:51 vitworkstation kernel: [ 4577.556586]  ? rescuer_thread+0x3a0/0x3a0
Apr 14 15:21:51 vitworkstation kernel: [ 4577.556590]  kthread+0xee/0x120
Apr 14 15:21:51 vitworkstation kernel: [ 4577.556597]  ? kthread_complete_and_exit+0x20/0x20
Apr 14 15:21:51 vitworkstation kernel: [ 4577.556604]  ret_from_fork+0x22/0x30
Apr 14 15:21:51 vitworkstation kernel: [ 4577.556615]  </TASK>
Apr 14 15:21:51 vitworkstation kernel: [ 4577.556631] amdgpu 0000:05:00.0: amdgpu: MODE2 reset
Apr 14 15:21:51 vitworkstation kernel: [ 4577.557399] amdgpu 0000:05:00.0: amdgpu: GPU reset succeeded, trying to resume
Apr 14 15:21:51 vitworkstation kernel: [ 4577.557879] [drm] PCIE GART of 1024M enabled.
Apr 14 15:21:51 vitworkstation kernel: [ 4577.557883] [drm] PTB located at 0x000000F400900000
Apr 14 15:21:51 vitworkstation kernel: [ 4577.557906] [drm] PSP is resuming...
Apr 14 15:21:51 vitworkstation kernel: [ 4577.577786] [drm] reserve 0x400000 from 0xf47fc00000 for PSP TMR
Apr 14 15:21:51 vitworkstation kernel: [ 4577.719483] amdgpu 0000:05:00.0: amdgpu: RAS: optional ras ta ucode is not available
Apr 14 15:21:51 vitworkstation kernel: [ 4577.731896] amdgpu 0000:05:00.0: amdgpu: RAP: optional rap ta ucode is not available
Apr 14 15:21:52 vitworkstation kernel: [ 4579.207161] [drm] kiq ring mec 2 pipe 1 q 0
Apr 14 15:21:52 vitworkstation kernel: [ 4579.381733] amdgpu 0000:05:00.0: [drm:amdgpu_ring_test_helper [amdgpu]] *ERROR* ring sdma0 test failed (-110)
Apr 14 15:21:52 vitworkstation kernel: [ 4579.382063] [drm:amdgpu_device_ip_resume_phase2 [amdgpu]] *ERROR* resume of IP block <sdma_v4_0> failed -110
Apr 14 15:21:52 vitworkstation kernel: [ 4579.382359] amdgpu 0000:05:00.0: amdgpu: GPU reset(1) failed
Apr 14 15:21:52 vitworkstation kernel: [ 4579.382429] amdgpu 0000:05:00.0: amdgpu: GPU reset end with ret = -110
Apr 14 15:21:52 vitworkstation kernel: [ 4579.382432] [drm:amdgpu_job_timedout [amdgpu]] *ERROR* GPU Recovery Failed: -110
Apr 14 15:22:03 vitworkstation kernel: [ 4589.431959] [drm:amdgpu_job_timedout [amdgpu]] *ERROR* ring sdma0 timeout, signaled seq=114333, emitted seq=114333
Apr 14 15:22:03 vitworkstation kernel: [ 4589.432494] [drm:amdgpu_job_timedout [amdgpu]] *ERROR* Process information: process opera pid 14036 thread opera:cs0 pid 14048
Apr 14 15:22:03 vitworkstation kernel: [ 4589.433009] amdgpu 0000:05:00.0: amdgpu: GPU reset begin!
Apr 14 15:22:03 vitworkstation kernel: [ 4589.615128] AMD-Vi: Completion-Wait loop timed out
Apr 14 15:22:03 vitworkstation kernel: [ 4589.747550] AMD-Vi: Completion-Wait loop timed out
Apr 14 15:22:03 vitworkstation kernel: [ 4589.879660] AMD-Vi: Completion-Wait loop timed out
Apr 14 15:22:03 vitworkstation kernel: [ 4590.011650] AMD-Vi: Completion-Wait loop timed out
Apr 14 15:22:03 vitworkstation kernel: [ 4590.143858] AMD-Vi: Completion-Wait loop timed out
Apr 14 15:22:03 vitworkstation kernel: [ 4590.275799] AMD-Vi: Completion-Wait loop timed out
Apr 14 15:22:03 vitworkstation kernel: [ 4590.407881] AMD-Vi: Completion-Wait loop timed out
Apr 14 15:22:03 vitworkstation kernel: [ 4590.438649] amdgpu 0000:05:00.0: AMD-Vi: Event logged [IO_PAGE_FAULT domain=0x0000 address=0x11088ac80 flags=0x0070]
Apr 14 15:22:03 vitworkstation kernel: [ 4590.438747] amdgpu 0000:05:00.0: AMD-Vi: Event logged [IO_PAGE_FAULT domain=0x0000 address=0x1108c0000 flags=0x0070]
Apr 14 15:22:03 vitworkstation kernel: [ 4590.438831] amdgpu 0000:05:00.0: AMD-Vi: Event logged [IO_PAGE_FAULT domain=0x0000 address=0x11088aca0 flags=0x0070]
Apr 14 15:22:03 vitworkstation kernel: [ 4590.438911] amdgpu 0000:05:00.0: AMD-Vi: Event logged [IO_PAGE_FAULT domain=0x0000 address=0x1108c0000 flags=0x0070]
Apr 14 15:22:03 vitworkstation kernel: [ 4590.438944] iommu ivhd0: AMD-Vi: Event logged [IOTLB_INV_TIMEOUT device=05:00.0 address=0x1001f4670]
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Apr 14 15:23:43 vitworkstation systemd-modules-load[344]: Inserted module 'lp'
Apr 14 15:23:43 vitworkstation systemd-modules-load[344]: Inserted module 'ppdev'
Apr 14 15:23:43 vitworkstation systemd-modules-load[344]: Inserted module 'parport_pc'
Apr 14 15:23:43 vitworkstation systemd-modules-load[344]: Inserted module 'msr'
Apr 14 15:23:43 vitworkstation kernel: [    0.000000] Linux version 5.19.0-38-generic (buildd@lcy02-amd64-001) (x86_64-linux-gnu-gcc (Ubuntu 11.3.0-1ubuntu1~22.04) 11.3.0, GNU ld (GNU Binutils for Ubuntu) 2.38) #39~22.04.1-Ubuntu SMP PREEMPT_DYNAMIC Fri Mar 17 21:16:15 UTC 2 (Ubuntu 5.19.0-38.39~22.04.1-generic 5.19.17)
Apr 14 15:23:43 vitworkstation systemd[1]: modprobe@chromeos_pstore.service: Deactivated successfully.
Apr 14 15:23:43 vitworkstation kernel: [    0.000000] Command line: BOOT_IMAGE=/boot/vmlinuz-5.19.0-38-generic root=UUID=71ead6cb-c8fa-4dc4-aac5-d0b56b6a8640 ro quiet splash vt.handoff=7