[12:06] <twbuncho[m]1> Why System Sometimes getting stuck?
[13:03] <tomreyn> twbuncho[m]1: that's not something that happens generally. it could be specific to your system.
[13:03] <tomreyn> twbuncho[m]1:inspect your log files, they may have more information on this.
[13:04]  * twbuncho[m]1 uploaded an image: (114KiB) < https://libera.ems.host/_matrix/media/r0/download/matrix.org/rzErhjNhuWfOZfzQtIuqkCEs/System%20Information.png >
[13:04] <tomreyn> journalctl -eb -1      would show you the end of the previous kernel sessions
[13:05] <tomreyn> this is not a lot of ram.
[13:06] <twbuncho[m]1> tomreyn: This Laptop is 8 Years Old Now
[13:07]  * twbuncho[m]1 uploaded an image: (242KiB) < https://libera.ems.host/_matrix/media/r0/download/matrix.org/AkfIZwUHkFRuESAUlkBglwFg/Log.png >
[13:09]  * twbuncho[m]1 uploaded an image: (144KiB) < https://libera.ems.host/_matrix/media/r0/download/matrix.org/WlDqUMBsfHqEWLEVXPRAUVgS/Kernel.png >
[13:09] <tomreyn> there's no clear indication on what may have caused the system to 'get stuck'. does it freeze entirely when this happens?
[13:10] <twbuncho[m]1> tomreyn: Freeze Entirely
[13:12] <tomreyn> the textual log you just shared looks like a normal / successful shutdown at 2022/04/18 19:51:54. but the one you shared before that could be from a system which froze, at 2022/04/18 09:00
[13:14] <twbuncho[m]1> tomreyn: Because System Freeze Entirely,So I have to Force Shutdown Laptop
[13:14] <tomreyn> you should boot to recovery and run a file system check on /dev/sdb1 (which is probably your efi system partition)
[13:14] <tomreyn> !sysrq
[13:14] <tomreyn> ^ this can hel  with retaining important log messages when the system seems to have frozen.
[13:15] <tomreyn> https://wiki.ubuntu.com/Kernel/Debugging and https://help.ubuntu.com/community/DebuggingIRQProblems may also be relevant
[13:16] <tomreyn> i suggest you also upgrade your system bios
[13:16] <tomreyn> journalctl -b | grep DMI:      would tell you what you have now
[13:18] <twbuncho[m]1> tomreyn: System BIOS is final release
[13:19]  * twbuncho[m]1 uploaded an image: (36KiB) < https://libera.ems.host/_matrix/media/r0/download/matrix.org/oMEANXjETGKBDOZnsesMsDZD/BIOS.png >
[13:23] <tomreyn> i see. well, you can try the other suggestions
[13:24] <tomreyn> see the system requirements / recommendation at https://ubuntustudio.org/download/
[13:25] <twbuncho[m]1> RAM is fully locked by Lenovo Special FRU Firmware
[13:26] <twbuncho[m]1> Even I have other RAM(Same Type) System cannot detect it
[13:32] <tomreyn> https://pcsupport.lenovo.com/gb/en/products/laptops-and-netbooks/thinkpad-edge-laptops/thinkpad-e550/20df/20df0030us/parts/display/model lists compatible dimms
[13:32] <tomreyn> select "commodity type" "memory", then "substitutes"
[13:33] <tomreyn> actually, select "compatible", "commodity type: memory" "8 GB: substitutes"
[13:42] <twbuncho[m]1> No More DDR3/DDR3L Memory In Market Now