Hi John,

On 8/11/26 16:29, John Haman wrote:
Hello, my Guix System is broken, and reverting to previous system generations 
has no effect. When I boot into my Guix, I have the following message from 
Guile. I am grateful for any advice on repairing the system.

[  8.377083] i2c i2c-3: adapter quirk: no zero length (addr 0x0018, size 0, 
write)
.....
[  8.377159] i2c i2c-4: adapter quirk: no zero length (addr 0x0019, size 0, 
write)
2026-08-11 10:20:06 localhost linux: [  1.003331] init[1]: segfault at 3fffe... 
in guile[d5593,401000+202000] likely on CPU 9 (core 3, socket 0)
2026-08-11 10:20:06 localhost linux: [  1.003354] Code: 8b 05 71 01 35 00 48... d 00 
01 00 00 48 89 05 54 01 35 00 48 8b 05 4d 01 35 00 <0f> b6 38 e8 65 a5 f...

This segmentation fault is 'normal' (but indeed confusing):

https://codeberg.org/guix/guix/issues/3333
https://codeberg.org/guix/guix/issues/735

A filesystem check is also normal after a power failure.

Are there any other messages? (I personally would probably not be of much further help though.)

Hugo

[  8.334154] i2c i2c-3: adapter quirk: no zero length (addr 0x0018, size 0, 
write)
.....
[  8.334260] i2c i2c-4: adapter quirk: no zero length (addr 0x0019, size 0, 
write)
fsck.fat 4.2 (2021-01-31)
Checking we can access the last sector of the filesystem
Boot sector contents:
System ID "mkfs.fat"
Media byte 0xf8 (hard disk)
         512 bytes per logical sector
        4096 bytes per cluster
          32 reserved sectors
First FAT starts at byte 16384 (sector 32)
          2 FATs, 32 bit entries
      561152 bytes per FAT (= 1096 sectors)
Root directory start at cluster 2 (arbitrary size)
Data area starts at byte 1138688 (sector 2224)
      140259 data clusters (574500864 bytes)
63 sectors/track, 255 heads
        2048 hidden sectors
     1124298 sectors total
Reclaiming unconnected clusters.
Checking free cluster summary.
/dev/sda1: 3 files, 42/140259 clusters

--
John T. Haman
[email protected]




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