I get these messages every few seconds:
Feb 28 19:35:55 Alex-laptop systemd-udevd[15510]: Process '/usr/sbin/crda'
failed with exit code 255.
Feb 28 19:35:58 Alex-laptop systemd-udevd[15513]: Process '/usr/sbin/crda'
failed with exit code 255.
Feb 28 19:35:58 Alex-laptop kernel: cfg80211: World regulatory domain updated:
Feb 28 19:35:58 Alex-laptop kernel: cfg80211: DFS Master region: unset
Feb 28 19:35:58 Alex-laptop kernel: cfg80211: (start_freq - end_freq @
bandwidth), (max_antenna_gain, max_eirp), (dfs_cac_time)
Feb 28 19:35:58 Alex-laptop kernel: cfg80211: (2402000 KHz - 2472000 KHz @
40000 KHz), (N/A, 2000 mBm), (N/A)
Feb 28 19:35:58 Alex-laptop kernel: cfg80211: (2457000 KHz - 2482000 KHz @
20000 KHz, 92000 KHz AUTO), (N/A, 2000 mBm), (N/A)
Feb 28 19:35:58 Alex-laptop kernel: cfg80211: (2474000 KHz - 2494000 KHz @
20000 KHz), (N/A, 2000 mBm), (N/A)
Feb 28 19:35:58 Alex-laptop kernel: cfg80211: (5170000 KHz - 5250000 KHz @
80000 KHz, 160000 KHz AUTO), (N/A, 2000 mBm), (N/A)
Feb 28 19:35:58 Alex-laptop kernel: cfg80211: (5250000 KHz - 5330000 KHz @
80000 KHz, 160000 KHz AUTO), (N/A, 2000 mBm), (0 s)
Feb 28 19:35:58 Alex-laptop kernel: cfg80211: (5490000 KHz - 5730000 KHz @
160000 KHz), (N/A, 2000 mBm), (0 s)
Feb 28 19:35:58 Alex-laptop kernel: cfg80211: (5735000 KHz - 5835000 KHz @
80000 KHz), (N/A, 2000 mBm), (N/A)
Feb 28 19:35:58 Alex-laptop kernel: cfg80211: (57240000 KHz - 63720000 KHz @
2160000 KHz), (N/A, 0 mBm), (N/A)
Feb 28 19:36:01 Alex-laptop systemd-udevd[15516]: Process '/usr/sbin/crda'
failed with exit code 255.
Feb 28 19:36:01 Alex-laptop kernel: cfg80211: World regulatory domain updated:
Feb 28 19:36:01 Alex-laptop kernel: cfg80211: DFS Master region: unset
Feb 28 19:36:01 Alex-laptop kernel: cfg80211: (start_freq - end_freq @
bandwidth), (max_antenna_gain, max_eirp), (dfs_cac_time)
Feb 28 19:36:01 Alex-laptop kernel: cfg80211: (2402000 KHz - 2472000 KHz @
40000 KHz), (N/A, 2000 mBm), (N/A)
Feb 28 19:36:01 Alex-laptop kernel: cfg80211: (2457000 KHz - 2482000 KHz @
20000 KHz, 92000 KHz AUTO), (N/A, 2000 mBm), (N/A)
Feb 28 19:36:01 Alex-laptop kernel: cfg80211: (2474000 KHz - 2494000 KHz @
20000 KHz), (N/A, 2000 mBm), (N/A)
Feb 28 19:36:01 Alex-laptop kernel: cfg80211: (5170000 KHz - 5250000 KHz @
80000 KHz, 160000 KHz AUTO), (N/A, 2000 mBm), (N/A)
Feb 28 19:36:01 Alex-laptop kernel: cfg80211: (5250000 KHz - 5330000 KHz @
80000 KHz, 160000 KHz AUTO), (N/A, 2000 mBm), (0 s)
Feb 28 19:36:01 Alex-laptop kernel: cfg80211: (5490000 KHz - 5730000 KHz @
160000 KHz), (N/A, 2000 mBm), (0 s)
Feb 28 19:36:01 Alex-laptop kernel: cfg80211: (5735000 KHz - 5835000 KHz @
80000 KHz), (N/A, 2000 mBm), (N/A)
Feb 28 19:36:01 Alex-laptop kernel: cfg80211: (57240000 KHz - 63720000 KHz @
2160000 KHz), (N/A, 0 mBm), (N/A)
Feb 28 19:36:05 Alex-laptop systemd-udevd[15519]: Process '/usr/sbin/crda'
failed with exit code 255.
Feb 28 19:36:05 Alex-laptop kernel: cfg80211: World regulatory domain updated:
Feb 28 19:36:05 Alex-laptop kernel: cfg80211: DFS Master region: unset
Feb 28 19:36:05 Alex-laptop kernel: cfg80211: (start_freq - end_freq @
bandwidth), (max_antenna_gain, max_eirp), (dfs_cac_time)
Feb 28 19:36:05 Alex-laptop kernel: cfg80211: (2402000 KHz - 2472000 KHz @
40000 KHz), (N/A, 2000 mBm), (N/A)
Feb 28 19:36:05 Alex-laptop kernel: cfg80211: (2457000 KHz - 2482000 KHz @
20000 KHz, 92000 KHz AUTO), (N/A, 2000 mBm), (N/A)
Feb 28 19:36:05 Alex-laptop kernel: cfg80211: (2474000 KHz - 2494000 KHz @
20000 KHz), (N/A, 2000 mBm), (N/A)
Feb 28 19:36:05 Alex-laptop kernel: cfg80211: (5170000 KHz - 5250000 KHz @
80000 KHz, 160000 KHz AUTO), (N/A, 2000 mBm), (N/A)
Feb 28 19:36:05 Alex-laptop kernel: cfg80211: (5250000 KHz - 5330000 KHz @
80000 KHz, 160000 KHz AUTO), (N/A, 2000 mBm), (0 s)
Feb 28 19:36:05 Alex-laptop kernel: cfg80211: (5490000 KHz - 5730000 KHz @
160000 KHz), (N/A, 2000 mBm), (0 s)
Feb 28 19:36:05 Alex-laptop kernel: cfg80211: (5735000 KHz - 5835000 KHz @
80000 KHz), (N/A, 2000 mBm), (N/A)
Feb 28 19:36:05 Alex-laptop kernel: cfg80211: (57240000 KHz - 63720000 KHz @
2160000 KHz), (N/A, 0 mBm), (N/A)
Running crda manually also doesn't seem to work:
# COUNTRY=GB crda
Failed to set regulatory domain: -7
Alex-laptop:~ # echo $?
249
It seems to be an informational message, but it hides all useful output for me,
for now I just commented the
line KERNEL=="regulatory*", ACTION=="change", SUBSYSTEM=="platform",
RUN+="/usr/sbin/crda" in /usr/lib/udev/rules.d/85-regulatory.rules.
I don't know if this can cause any problem, but so far wireless seems to still
work.
The only other related thing I have found is
https://bugzilla.suse.com/show_bug.cgi?id=937756 but that seems to be fixed and
https://github.com/systemd/systemd/issues/922 which seems to be a different
issue.