Hello Benjamin, On Mon, Nov 17, 2025 at 02:05:41AM +0100, Benjamin Drung wrote: > On Wed, 2025-11-05 at 20:14 +0100, Uwe Kleine-König wrote: > > Can you try adding > > > > earlyprintk=serial,0x7e215040 > > > > to the kernel commandline. Not sure this activates the right procedures, > > maybe try it with the working kernel first. > > I tried with the working kernel 6.12.43+deb13-rpi but these were the > earliest lines: > > [ 4.116565] printk: legacy console [ttyS1] enabled > [ 4.129635] printk: legacy bootconsole [earlycon0] disabled > [ 4.147050] bcm2835-power bcm2835-power: Broadcom BCM2835 power domains > driver > [ 4.160972] mousedev: PS/2 mouse device common for all mice > [ 4.172622] i2c-bcm2835 20805000.i2c: Could not read clock-frequency > property > [ 4.186585] bcm2835-wdt bcm2835-wdt: Broadcom BCM2835 watchdog timer > > I tried with 6.12.57+deb13-rpi but that failed to boot and the > earlyprintk line did not give any additional logs.
Can you please provide a full kernel log of the working kernel?
Also please provide the output of:
for f in /proc/tty/driver/*; do echo $f; sed 's/^/ /' < $f; done
Best regards
Uwe
signature.asc
Description: PGP signature
