NotAnArdvark

joined 1 year ago
[–] NotAnArdvark@lemmy.ca 43 points 1 week ago (4 children)

I don't see what would be wrong with a world where businesses just satisfied themselves with providing employees with a reasonable living, contributed to the communities they were in, and provided a good or service that was needed. Sitting under a tree and reading a book sounds better than watching the world burn in your name-brand clothes and 5 bedroom 2.5 bath house.

[–] NotAnArdvark@lemmy.ca 5 points 1 week ago

Adding my "Me too" to Vorta/Borg. I use it with Borgbase, which I like because it's legitimately cheap and they support Borg development. As well, you can set Borg backups with Borgbase to "append only," which prevents ransomware or other unexpected "whoopsies" from wiping out your backup history.

I backup most of my computer every hour, but have pruning rules that make sure things don't get too out of hand. I have a second backup that backs everything up to my NAS (using Vorta, again). This is helpful for things like my downloads folder, virtual machines, or STEAM library - things I wouldn't want to backup over the network, but on occasion I do find myself going "whoops, I wanted that."

I also have Vorta working on my Mom's Macbook, then have Borgbase send me an email when there isn't any activity for longer than a couple of days. Once I got automatic pruning working right I never had to touch this again.

[–] NotAnArdvark@lemmy.ca 4 points 2 weeks ago* (last edited 2 weeks ago)

I want a GPU to do silly AI stuff, but my hesitation with Intel is I'm not convinced they're in the GPU market for the long haul. The irony, of course, is that if there are lots of people like me, Intel may actually abort their GPU efforts because no one is buying.

I suppose that they're working on their 3rd generation already is a good sign.

[–] NotAnArdvark@lemmy.ca 2 points 2 weeks ago

I moved from Kubuntu to Tumbleweed and really like it. For some reason I really don't like RPMs and that caused some hesitancy when I thought of switching, but really I never deal with RPMs directly. Zypper is ok and I've made peace with Flatpak. I update the whole distro every weekend and I've tested out reverting using Snapper.

In the year and a half of using it I can think of two problems I had from updating - one is fixed by removing the GPUCache directory of an Electron app when Mesa gets updated, the other is with Zoom which I mostly fixed by moving to the Flatpak version.

[–] NotAnArdvark@lemmy.ca 1 points 2 weeks ago (1 children)

I did this this year for wildfire smoke, and it works great. Having said that, it is not quiet and the way I was using it was to run it at full blast for an hour, then leave it off for most the day.

If you wanted an always-on solution, I think I'd actually suggest a commercial air purifier.

[–] NotAnArdvark@lemmy.ca 6 points 3 weeks ago (1 children)

The model for most the content on the internet doesn't work without advertising. The people who are "zero tolerance" on ads are going to prevent possible compromises from being made and just encourage an arms race. I don't think we win that arms race, we get more insidious forms of tracking and brazen advertising.

[–] NotAnArdvark@lemmy.ca 2 points 3 weeks ago

A 500lbs. bomb doesn't get you very much. I'm surprised how little damage there is.

[–] NotAnArdvark@lemmy.ca 5 points 3 weeks ago* (last edited 3 weeks ago) (2 children)

The general discovery I made was this: for the small price of foregoing pretty colors and buttons and chrome, you can get a computer to do exactly what you want it to do much quicker. Assuming a willingness to learn a bit of shell scripting, of course.

I find the emphasis people put on speed interesting, because by far the slowest part of any interaction I have with my computer is caused by me just figuring out what I'm doing next. When I'm functioning at top speed not needing to click around, or say, having the perfect keyboard shortcut, would save me only fractions of a second.

Actually.. to add to this I think the cognitive load of visually navigating is much lower than typing specific things it. I think this is why I find I'd prefer to click around my bookmarks or files to find something than just pull up a "Find" dialog and type something reasonable in.

[–] NotAnArdvark@lemmy.ca 2 points 1 month ago

I tried using KOrganize which had KMail and some other stuff integrated together and ended up feeling like it was a gigantic, archaic codebase just hanging on by a thread. It struggled a lot with Gmail and several times I deleted my whole mail profile to try to fix some strange bug.

If I recall, what did me in was that it would stop sending emails after running for a while. The fix had something to do with restarting Akonadi. It was really disappointing, because I love a good UI/Plasma integration.

I use Thunderbird now and ... eh. It's ok.

[–] NotAnArdvark@lemmy.ca 0 points 1 month ago (1 children)
[–] NotAnArdvark@lemmy.ca 1 points 1 month ago (3 children)

Doesn't VirtualBox use KVM if it's available?

I likeVBoxManage. Any crazy thing I've ever imagined doing with a VM it's already supported.

So, to answer your question - I use VirtualBox because it does everything I want and I've never had a reason to look elsewhere.

[–] NotAnArdvark@lemmy.ca 2 points 2 months ago

"Chaser" because we live out in the country and use it to pick up our dogs who sometimes wander off and we have to go retrieve. Also, because it's a Chevy. It's Chevy Chase_r_.

 

The following command works even though I really don't think I should have permission to the key file:
$ openssl aes-256-cbc -d -pbkdf2 -in etc_backup.tar.xz.enc -out etc_backup.tar.xz -k /etc/ssl/private/etcBackup.key

I'm unable to even ascertain the existence of the key file under my normal user. I'm a member of only two groups, my own group and vboxusers.

The permissions leading up to that file:

drwxr-xr-x   1 root root 4010 Jul 31 08:01 etc
...
drwxr-xr-x 1 root root      206 Jul 14 23:52 ssl
...
drwx------ 1 root root    26 Jul 31 14:07 private
...
-rw------- 1 root root 256 Jul 31 14:07 etcBackup.key

OpenSSL isn't setuid:

> ls -la $(which openssl)
-rwxr-xr-x 1 root root 1004768 Jul 14 23:52 /usr/bin/openssl

There don't appear to be any ACLs related to that key file:

> sudo getfacl /etc/ssl/private/etcBackup.key
[sudo] password for root: 
getfacl: Removing leading '/' from absolute path names
# file: etc/ssl/private/etcBackup.key
# owner: root
# group: root
user::rw-
group::---
other::---

> sudo lsattr  /etc/ssl/private/etcBackup.key
---------------------- /etc/ssl/private/etcBackup.key

Finally, it's not just the case that the original file was encrypted with an empty file:

> openssl aes-256-cbc -d -pbkdf2 -in etc_backup.tar.xz.enc -out etc_backup.tar.xz -k /etc/ssl/private/abc.key
bad decrypt
4047F634B67F0000:error:1C800064:Provider routines:ossl_cipher_unpadblock:bad decrypt:providers/implementations/ciphers/ciphercommon_block.c:124

Does anyone know what I've missed here?

 

Zoom is vital to my job this month and prior to an update last week I had the openSUSE version of Zoom's RPM installed and working fine.

I updated my Tumbleweed installation to openSUSE-20240704-0 last week, after which Zoom started crashing when sharing a screen. There was a message in the logs about the library libqt5qml.so and I thought I could fix this by backing out either the update for the libQtQuick5 package in particular, or just booting from the pre-update snapshot.

To make a long story short, I ultimately installed the Zoom Flatpak and resolved to get back to this when I had a bit more time.

My question - Can people suggest the right way in openSUSE Tumbleweed to handle the situation where an update breaks something on the system?

Assuming libQtQuick5 was the updated package that was at fault here, is there a way I could have downgraded just that package? Would booting from the pre-update snapshot and then just carrying on with my week have been a reasonable way to proceed?

To be clear - I'm not so much concerned about Zoom, I'm more curious about how to use the openSUSE Tumbleweed tools to recover from updates that cause problems.

Thank you!

 

cross-posted from: https://lemmy.ca/post/14107888

I have a very specific questions about Linux Traffic control and u32 filters in particular. However, I don't know where the right place is to ask such a question as it's fairly niche.

The Linux Advanced Routing & Traffic Control site says it has a mailing list for questions, but the last post was from 2019. There is also the incredibly busy 'linux-netdev' mailing list, but, the traffic there looks like strictly source changes.

Any ideas?

The question I'm trying to find an answer to is: The u32 tc filter seems to support negative byte offsets which allows you to examine the Ethernet frame header (I don't think I even found documentation on this, this is thanks to ChatGPT). However, when using u32 values to examine 8 bytes I can only use offsets in increments of 4 - like "at -8" or "at -12", with any other increment giving me the error Illegal "match".

This seems like only a curiosity, but, I've been struggling to get my bit-matching to match the way I expect, and I'm wondering if this suggests that matching doesn't function the way I think.

 

With the cold weather I was hoping to hear of some experiences people have had with their heat pumps.

What kind of backup heat do you have? Are you using it? Is there some temperature where you just stop using the heat pump, or are you even consciously thinking about it?

Thanks!

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