FS#79525 - Serial console is broken on iso image

Attached to Project: Arch Linux
Opened by Krzysztof Piecuch (thy-duang) - Thursday, 31 August 2023, 09:46 GMT
Last edited by Toolybird (Toolybird) - Thursday, 31 August 2023, 22:48 GMT
Task Type Bug Report
Category System
Status Closed
Assigned To No-one
Architecture All
Severity Low
Priority Normal
Reported Version
Due in Version Undecided
Due Date Undecided
Percent Complete 100%
Votes 0
Private No

Details

Description: When booting an ISO9660 image the serial console is not configured properly. Misconfiguration includes grub serial. This means that I can't even see GRUB to add `console=tty0 console=ttyS0,115200` line to kernel cmdline parameters.

ArchWiki[1] says that the image is configured with serial console but it's the Syslinux that is configured with serial and not GRUB, which happens to be the default boot target. Why does the image have both syslinux and grub I don't know.

Additional info:
* package version(s) archlinux-2023.08.01-x86_64.iso
* config and/or log files etc.
* link to upstream bug report, if any

Steps to reproduce:
1. Boot ISO image
2. Observe you're booting into GRUB, not Syslinux

1. Boot ISO image
2. Observe serial console not working in the specified 115200N1 mode

[1]: https://wiki.archlinux.org/title/Working_with_the_serial_console#Installing_Arch_Linux_using_the_serial_console
This task depends upon

Closed by  Toolybird (Toolybird)
Thursday, 31 August 2023, 22:48 GMT
Reason for closing:  Not a bug
Additional comments about closing:  See comments
Comment by Toolybird (Toolybird) - Thursday, 31 August 2023, 22:48 GMT
Thanks, but this ticket is a little confused. The Arch ISO image allows booting on both BIOS and UEFI systems. syslinux is used when booting on BIOS. GRUB is used when booting on UEFI. I'd recommend you take your issue to the proper support channels (Forum/IRC/Mailing Lists/Reddit/etc) to see if anyone can assist with troubleshooting where it goes wrong for you.

Either way, archiso issues belong "upstream" in the Arch GitLab instance [1]. If there is indeed a bug, it will need to be submitted there.

[1] https://gitlab.archlinux.org/archlinux/archiso

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