NeilPandya

x11vnc & SDDM & Kubuntu

SDDM with 16.04 LTS introduces two new problems that did not exist with 15.10 or 14.04:

1. The option HideShells in /etc/sddm.conf does not work correctly. When more than one shell is specified, the filter does not work and the matching users are listed in the greeting screen notwithstanding.

2. The xauthority (or MIT-MAGIC-COOKIE) file is no longer at /var/run/sddm/:0 but at an unpredictable location like /var/run/sddm/{ca7d6d45-9b4d-4a92-997e-c9c11081dea1} which is build by including a random UUID in the path. When trying to start x11vnc, for example, that file cannot be found. With 15.10, one could start x11vnc with /usr/bin/x11vnc -auth /var/run/sddm/:0 -display :0 -rfbauth /etc/vncpasswd -rfbport 5943 -reopen -forever, this is no longer possible.

The second bug is uncool with Ubuntu server for remote root servers.

NeilPandya

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NeilPandya

A Good Way to Document

I hate that I have to do this, but I've been using Stack Overflow and Stack Exchange for over a decade and I know how negative people can be.

The Problem

I teach children and adults to hack RaspberryPi, Arduino, ESP8266, etc. at multiple Maker Spaces. My issue was with the package libsoxr0:armhf but Google found this to be the most relevant question.

In my case I searched for my exact error message:

NeilPandya

import torch
import os

print('availabe:',torch.cuda.is_available() )
print('devices available', torch.cuda.device_count())
print('device id:',torch.cuda.current_device() )
print('device address', torch.cuda.device(0))
print('gpu model',torch.cuda.get_device_name(0))

device = torch.device('cuda' if torch.cuda.is_available() else 'cpu')