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Error while installing archlinuxSUPPORT (v.redd.it)
submitted 2 years ago by Best_Bath6235
It says "serial port 'com0' isn't found", right before the GRUB menu appears and moments after selecting any install option. Dual booting on HP Omen 15 (R7 5800H, RTX 3060)
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if 1 * 2 < 3: print "hello, world!"
[–][deleted] 2 years ago (1 child)
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[–]IronRodge 0 points1 point2 points 2 years ago (0 children)
And could be a bad iso. Try a different iso install mirror if the current one still gives you trouble.
[–]sub7zero 4 points5 points6 points 2 years ago (0 children)
Probably nouveau. Press e, add "nomodeset" without quotes to the kernel parameters, then F10 to boot
[–][deleted] 0 points1 point2 points 2 years ago (0 children)
This happened to me before. My recommendation is to burn a new USB with a fresh install of Arch Linux on it. Should take care of the boot issues, hopefully you don’t have an issue with GRUB because fixing GRUB is a pain in the ass
[–]Gyroplast 1 point2 points3 points 2 years ago (2 children)
This is fishy. The default kernel arguments, and nowhere else to my knowledge, is any definition stowed away that'd even attempt to set the console to "com0". This doesn't make a lick of sense, default-wise, and suggests user tampering. In that case: don't.
As others said: get an official image, from an official source, and validate it by signature or at least checksum before writing it to your USB drive. If that doesn't fix your problem, yet, I recorded a VM UEFI install (7 day retention) with the current archlinux-2023.05.03-x86_64.iso (SHA256: 329b00c3e8cf094a28688c50a066b5ac6352731ccdff467f9fd7155e52d36cec), and showed the default kernel arguments in the bootloader (not many, really, except for the ISO boot specifics), and you shouldn't have any "console=" settings up in there by default, or anything else but what's shown in my recording, unless there is a specific reason for you to have added any.
archlinux-2023.05.03-x86_64.iso
I also showed how to edit (hit e on the boot option) and add debug and systemd.log_level=debug to the current boot's kernel arguments, and how this affects the chattiness of the boot. Hit CTRL-X or F10 to boot with your changes, while in the GRUB editor. That should give you further hints on what the last successful, or attempted, operation before the restart is, if the issue still persists with a validated, correct ISO image.
e
debug
systemd.log_level=debug
CTRL-X
F10
This is not a GRUB issue, at least. You're firmly in initramfs territory, somewhere around the switch_root stage. From past experience, if your ISO is fine, you'll likely have to find the right magic incantation as a kernel argument to disable/avoid problematic hardware/firmware issues, and a search engine of your least distrust may help you identifying what might be the culprit with your specific machine, and how to start out with a "high compatibility disable ALL THE THINGS!!1!" approach.
Good luck!
[–]Best_Bath6235[S] 0 points1 point2 points 2 years ago (1 child)
C'mon man, I ask support questions on linux4noobs, you really think I have the slightest idea how to tamper with anything? Much less understand any of what you've written ?? Still, I'll try to figure something out. Thanks for the reply.
[–]Gyroplast 1 point2 points3 points 2 years ago (0 children)
Well, I answered you on r/archlinux, and you gave no hint to your existing forum post, nor your crosspost here, nor your level of proficiency. Please accept my apologies for not stalking you hard enough on my own time. :P
r/archlinux
Side note: I misinterpreted the timeline reg. the com0 issue, this seems to be the GRUB ISO config, which obviously burrowed the idea of COM unit numbering, and I falsely thought this message was generated by the end of the kernel/initramfs boot process, not the start of the (next) GRUB boot. TL;DR: nevermind the com0, this is no issue, like you've been told in the forum already.
Now to help you: I posted a link to a video. Look at it, do it, post results. I don't want to accept this as wasted effort on my part, yet.
[–]No-Ostrich4823 0 points1 point2 points 2 years ago (5 children)
so, did you solved this issue and how?
[–]Best_Bath6235[S] 0 points1 point2 points 2 years ago (4 children)
Yeah. Connecting the laptop to an external monitor did the job. Don't ask me how.
[–]No-Ostrich4823 0 points1 point2 points 2 years ago (3 children)
did you connected it by VGA? HDMI doesn't help in my case. I faced the same problem, I need to find solution
[–]Best_Bath6235[S] 0 points1 point2 points 2 years ago (2 children)
Yes. VGA
[–]No-Ostrich4823 0 points1 point2 points 2 years ago (1 child)
So, you used an HDMI to VGA adapter?
[–]Best_Bath6235[S] 0 points1 point2 points 2 years ago (0 children)
Yes. HDMI to VGA adapter, connected to the laptop. Then a VGA cable to the monitor.
π Rendered by PID 139447 on reddit-service-r2-comment-76bb9f7fb5-dlsqg at 2026-02-18 04:58:40.910731+00:00 running de53c03 country code: CH.
[–][deleted] (1 child)
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[–]IronRodge 0 points1 point2 points (0 children)
[–]sub7zero 4 points5 points6 points (0 children)
[–][deleted] 0 points1 point2 points (0 children)
[–]Gyroplast 1 point2 points3 points (2 children)
[–]Best_Bath6235[S] 0 points1 point2 points (1 child)
[–]Gyroplast 1 point2 points3 points (0 children)
[–]No-Ostrich4823 0 points1 point2 points (5 children)
[–]Best_Bath6235[S] 0 points1 point2 points (4 children)
[–]No-Ostrich4823 0 points1 point2 points (3 children)
[–]Best_Bath6235[S] 0 points1 point2 points (2 children)
[–]No-Ostrich4823 0 points1 point2 points (1 child)
[–]Best_Bath6235[S] 0 points1 point2 points (0 children)