I got this frustrating errors W: http://linux.dropbox.com/ubuntu/dists/disco/Release.gpg: Key is stored in legacy trusted.gpg keyring (/etc/apt/trusted.gpg), see the DEPRECATION section in apt-key(8) for details. After over an hour of googling and back and forth with gpt4, this one as below resolved it temporarily. Thanks! This worked. For others that run into this problem: Use a…
Category: About computer
Unable to use fitz with python 3.8
I use pymupdf to automatically sign my document. But the package name is pymupdf even the warning is that “fitz” is not installed. If come across an error message like import fitz File “/home/phsamuel/p3/lib/python3.10/site-packages/fitz/__init__.py”, line 1, in <module> from frontend import * File “/home/phsamuel/p3/lib/python3.10/site-packages/frontend/__init__.py”, line 1, in <module> from .events import * File “/home/phsamuel/p3/lib/python3.10/site-packages/frontend/events/__init__.py”, line…
OpenCV and QT on 22.04
I got error Could not load the Qt platform plugin “xcb” in “” even though it was found Even following this did not solve the problem. But it seems that going headless works. That is, pip uninstall opencv-python pip install opencv-python-headless
hotkey for taking screenshots
Suddenly Ubuntu does not show the window of how to deal with a screenshot after taking one. It still was not solved. But I guess it is better to just add “Ctrl” to grab a shot.
No bold math in latex
I got this “bug” for a long time and ignored it. Eventually it seems like coming from \renewcommand{\sfdefault}{cmss} which I am not sure where I copied from. This seems to set sans font to cmss, which probably doesn’t bold math.
Canvas API pagination
Canvas API’s pagination is mentioned here but is not really very well-documented. For example, r.links[‘last’] may not exist. Therefore a solution as below suggested here may not work while r.links[‘current’][‘url’] != r.links[‘last’][‘url’]: r = requests.get(r.links[‘next’][‘url’], headers=headers) raw = r.json() for question in raw: data_set.append(question) Instead, I changed it a little bit…
OU IT ticket request
It is kind of hard to find. The link is here
Muting Discord server
The tooltip for muting a channel explains that it prevents unread indicators and notifications unless you’re mentioned. If you want it not to show anything even if you’re mentioned, click on the server name in the upper left and change your notification settings to “nothing” for that channel.
Capture loopback audio in Ubuntu
TLDR: use pavucontrol and select the “Monitor” option of the playback device used by the application in the recording tab.
Office 365 online no equation editor
As title, it wasted me an hour to figure that out. The information online is very confusing. In particular, they describe how to insert equations for office 365. And never even footnote that the “web-version” does not have that feature. https://beebom.com/microsoft-office-web-vs-desktop-apps-difference/