I tried to run `chromium` on my Kubuntu 20.04.3 LTS workstation and got the following error:
Snap-confine has elevated permissions and is not confined but should be. Refusing to continue to avoid permission escalation attacks
I found this and this worked for me:
systemctl enable --now apparmor.service systemctl enable --now snapd.apparmor.service
Today I found: Checking ashift on existing pools. In summary:
# zpool get all | grep ashift # zpool get all | less # zdb -C | grep ashift # zdb -C | less # zdb -U /etc/zfs/zpool.cache | less
Per ZFS 101—Understanding ZFS storage and performance you *really* want to make sure your ashift value is aligned with your disk’s sector size. ashift=9 for 512; ashift=12 for 4096; I’ve heard some SSDs can be 8K, but I haven’t been able to confirm for my own disks.
I added a CACHEDIR.TAG file to the following directories on my workstation:
If the ZFS ARC goes nuts with e.g. lots of arc_prune processes, try this:
# echo 3 > /proc/sys/vm/drop_caches
Thanks to Xe on #lobsters.
The ‘wa’ state in `top` can indicate an IO wait, but to figure out what’s causing the IO wait try this command:
# ps aux | awk '$8 ~ /D/ { print $0 }' | less
You can read more here. Thanks to bsandro on #lobsters.
According to `man top`:
The status of the task can be one of: D = uninterruptible sleep I = idle R = running S = sleeping T = stopped by job control signal t = stopped by debugger during trace Z = zombie
So my mate CK put me onto RDM which you can use to improve the graphical resolution on your MacBook Pro Retina display. So much better.
This NBN Modem Routers ISP Settings says Dodo settings are:
Protocol: PPPoE VLAN ID: 100 MTU: auto or 1492 login: Dodo provided username/password RSP Supplied equipment auto configures
Good to know!
Today I came across: SSL Server Test.
Found some interesting reading on autonomic computing.