So I really like canon color laser multi function printers – for their full duplex color printing, their copying, for full duplex scanning to a pdf on a usb stick (scanning to sane didn’t work the last time I looked), but certainly not for installing packages via a bash script as root…
So I spent some time today finding the relevant deb file (similar named RPM if you prefer).
Untar the tar ball you got from the canon website and then
# dpkg -i 64-bit_Driver/cnrdrvcups-ufr2-us_5.20-1_amd64.deb
then install the printer under the ubuntu settings / printers
odds are that your printers’ ppd is included in the above deb file, if you happen to have trouble with that, you can look through the PPD/Debian directory for your printers ppd file.
ubuntu 20.04 nvidia
https://linoxide.com/linux-how-to/how-to-install-nvidia-driver-on-ubuntu/
$ sudo ubuntu-drivers devices
$ sudo ubuntu-drivers autoinstall
ubuntu 18.04 LTS to 20.04 LTS
It wasn’t letting me upgrade until I got rid of mutter
$sudo apt-get remove mutter
Random Chrome Crashing
Chrome kept crashing today – not the whole thing – but certain tabs when they loaded a lot of content. I updated chrome and everything else that needed updates, restarted chrome, turned off all the extensions. still crashing…
Then I deleted 12 gigs of files I was storing in /dev/shm… much better…
ubuntu 18.04 stopped working after update
had to boot into single user mode – edit the grub entry – add single near the end of the linux line – search single user mode ubuntu 18.04
Then I had to run the first few startup items so that I had a network – update the software and then install lightdm
the list of things to start you can get with ls /etc/rc2.d (leave off the S01 at the beginning).
then start them with systemctl start
e.g.:
systemctl start acpid anacron apf-firewall apport atd avahi-daemon
luks usb crypttab ubuntu 18.04
Ran into slow boot on ubuntu 18.04 with local keys for usb drives with luks
the magic to avoid slow boot if usb is missing is to add the noauto option in /etc/crypttab
e.g. crypt tab entry
foo UUID=bar /root/.bletch luks,noauto
credit default swaps
Using data reported by Depository Trust & Clearing Corporation during the 155 weeks ending June 28, 2013, there were credit default swaps traded on only 13 reference names among U.S. banking firms:
Bank of America Corporation
Morgan Stanley
The Goldman Sachs Group, Inc.
JPMorgan Chase & Co.
Citigroup Inc.
Wells Fargo & Co. (NYSE:WFC)
MetLife, Inc. (NYSE:MET)
Ally Financial, Inc.
iStar Financial Inc. (SFI)
American Express Company (NYSE:AXP)
Capital One Financial Corporation (NYSE:COF)
Capital One Bank (USA), National Association
Citigroup Japan Holdings Corp.
from: https://seekingalpha.com/article/1635052-u-s-bank-credit-default-swaps-only-those-too-big-too-fail-can-be-hedged
ubuntu 18.04 manual raid, crypt, lvm highlights
After many days of banging my head against how to get 18.04 installed with raid1, crypt, and lvm on new disks from alternative server iso, the crux was the 1mb bios boot partition at the beginning of both disks.
Without that I’d get all the way through the install and – can’t install grub “you’re f’d”
What I did:
partition 1mb bios boot partition 1mb into the disk – offset by 2048 bytes from beginning of disk for size of 2048 bytes. type is bios boot.
then I did a generous boot partition of 732MB as raid, then the rest of the disk as a raid partition.
setup raid on sd[a,b]2 as md0, sd[a,b]3 as md1
setup ext4 on md0 mount as /boot
setup crypt on md1
setup lvm on crypt
setup swap on lvm, setup root on lvm
assign swap as swap
setup ext4 on lvm-root mount on /
finish install
put process in screen after starting it
https://www.linkedin.com/pulse/move-running-process-screen-bruce-werdschinski/