dep composed on 2024-12-16 06:25 (UTC):
BootCurrent: 0004 Timeout: 0 seconds BootOrder: 0004,0000,0001,0002,0003 Boot0000* ubuntu HD(4,GPT,f3d5923e-cff9-4b47-beb9-be3a8442e1a0,0x800,0x96000)/File(\EFI\ubuntu\shimx64.efi) Boot0001* UEFI OS HD(4,GPT,f3d5923e-cff9-4b47-beb9-be3a8442e1a0,0x800,0x96000)/File(\EFI\BOOT\BOOTX64.EFI) Boot0002* ubuntu HD(4,GPT,f3d5923e-cff9-4b47-beb9-be3a8442e1a0,0x800,0x96000)/File(EFI\Ubuntu\grubx64.efi) Boot0003* Hard Drive BBS(HD,,0x0) Boot0004* debian HD(4,GPT,f3d5923e-cff9-4b47-beb9-be3a8442e1a0,0x800,0x96000)/File(\EFI\debian\shimx64.efi)
In that I don't have ubuntu on the machine anymore, and haven't for awhile, I'm a little bit surprised that it's there. I do not know which of the other three I should keep. Ever since the big BIOS rejiggering of a decade ago, what once was clear has been a mystery to me. So in addition to not knowing which one(s) to keep, I have no idea how to get rid of any I don't want or need. Suggestions, advice, or knowledge from the above?
1 & 3 are fallbacks that should have no need to disturb. As Ubuntu is no longer present on the system, then can be removed using efibootmgr, which provides a man page.
dep composed on 2024-12-16 06:47 (UTC):
strangely, memtest no longer appears in my grub menu, and i have no memtest executable.
memtest86+ is in the boot menu of most GNU/Linux installation media. There's also memtest86 in both free and nonfree versions that I have more faith in for use with UEFI PCs and Macs using DDR4 and newer RAM: https://www.memtest86.com/
IMO when things die unexpectidly while powered up it's hdd/ram/somecard/mainboard in this order.
Dr. Klepp left PSUs out of that list.
we'll see if it repeats. i very much hope it doesn't. i wondered if a log i've had running -- a ping every three seconds with the result written to disk -- might have stressed something. and it has on occasion over the years suffered from what seems to be something overheating, such as when it tries to compile a heap of nvidia modules.
Failing electrolytic capacitors are notorious causes of random system failure. Most caps on motherboards made around 12 or less years ago have been replaced by polys that are magnitudes more reliable. An Asus from 2013 probably has only polys, or polys for all the most important ones. OTOH, you're unlikely to find anything but electrolytics in power supplies and various addon components. If your PSU is out of warranty, get its cover off to inspect for leakage and swelling. If you find swollen tops, or obvious leakage, not to be confused with splattered glue, they or your PSU need to be replaced. Not all electrolytics manifest obvious signs of failure. Major brand names are not a guarantee that any given PSU was made entirely of quality parts to start with. Cheap PSUs often provided with budget cases are unlikely to have any quality caps. Visit badcaps.net for details on evaluating what you find.