Search found 376 matches

by peter_b
Tue Sep 15, 2020 6:40 pm
Forum: Knowledge Base
Topic: Huawei HA35-22: External antenna for LTE-only
Replies: 0
Views: 6427

Huawei HA35-22: External antenna for LTE-only

[QUESTION] The default hybrid modem/router supplied by Magenta (T-Mobile) in Austria is a Huawei HA35-22. On the back it has 2 external antenna connectors (SMA female) under a plastic cover. These connectors are neither shown nor mentioned in its user manual. Which signal would these antennas ampli...
by peter_b
Mon Sep 07, 2020 5:16 pm
Forum: Knowledge Base
Topic: Huge xsession-errors: "video mixer rendering failure..."
Replies: 0
Views: 5862

Huge xsession-errors: "video mixer rendering failure..."

[PROBLEM] My ~/xsession-errors file has grown to several gigabytes size, mostly flooded with the following message: vdpau_chroma filter error: [00007fc82c01c4e0] video mixer rendering failure: An invalid handle value was provided.vdpau_chroma filter error: video mixer attributes failure: An invalid...
by peter_b
Mon Aug 10, 2020 5:17 pm
Forum: Knowledge Base
Topic: VLC: Cannot resolve xxx port yyy : Name or service not known
Replies: 0
Views: 5462

VLC: Cannot resolve xxx port yyy : Name or service not known

[PROBLEM] Trying to start VLC from commandline to have its web-interface listen to a certain IP/port: $ vlc --intf http --http-host localhost:9090 (This is according to VLC's official HTTP-requests documentation for this) ...gives me the following error message: VLC media player 3.0.8 Vetinari (rev...
by peter_b
Tue Aug 04, 2020 9:11 pm
Forum: Knowledge Base
Topic: Doxygen: "dot not found"
Replies: 0
Views: 6433

Doxygen: "dot not found"

[PROBLEM] Running Doxygen on Debian 9 fails with an error message that says something like: dot: not found (I forgot to copy the original error message...) [SOLUTION] "dot" is an executable included in the GraphViz package (which seemed to be missing and not listed as dependency). So: $ a...
by peter_b
Fri Jun 12, 2020 6:07 pm
Forum: HowTo's
Topic: Debian-based system: Verify all packages (integrity)
Replies: 0
Views: 5270

Debian-based system: Verify all packages (integrity)

Code: Select all

$ apt install debsums
# Verify all packages and show only errors:

Code: Select all

$ sudo debsums -s
Remove the "-s" to get a verbose output that shows all package files that are okay too.

Links:
https://blog.sleeplessbeastie.eu/2015/0 ... -packages/
by peter_b
Tue Jun 09, 2020 7:16 pm
Forum: Knowledge Base
Topic: http over SSH port forward = weird characters
Replies: 0
Views: 5841

http over SSH port forward = weird characters

[PROBLEM] I try to open a website over SSH port-forwarded SSL , and get a reply but it's just some weird unicode blocks. The setup is as follows: Localhost: My local PC "Server1": My proxy server "Server2": 3rd party server, running https website - but restricted access to IP of...
by peter_b
Mon Jun 08, 2020 4:04 pm
Forum: Knowledge Base
Topic: Compiling FFmpeg on Debian/Ubuntu
Replies: 3
Views: 8662

Re: Compiling FFmpeg on Debian/Ubuntu

For curren git build on (X)ubuntu 18.04 it's libsdl2:

Code: Select all

sudo apt install libsdl2-dev
More discussion/infos at: https://stackoverflow.com/questions/204 ... ompilation
by peter_b
Tue May 05, 2020 2:08 pm
Forum: Knowledge Base
Topic: Thunderbird: immediate crash when trying to launch
Replies: 0
Views: 6469

Thunderbird: immediate crash when trying to launch

[PROBLEM] I've been using Thunderbird for I don't know, but about 20 years or so - and I think in total it crashed a handful of times in that duration. Wow. Recently however, after updating to v68.7.0 (Xubuntu 18.04.4) Thunderbird sometimes refuses to start, and I immediately only see the "Moz...
by peter_b
Sat Apr 25, 2020 2:33 am
Forum: HowTo's
Topic: XFCE: Enable trash outside of home
Replies: 0
Views: 6540

XFCE: Enable trash outside of home

I usually have more than one drive in my computers. Every now and then I run into the weird behavior that when I want to remove but not delete (=send to trash/recycle bin) files or folders, it doesn't work: thunar-trash_not_found.png I'm forced to either let it be or remove it completely. This short...
by peter_b
Tue Mar 17, 2020 4:12 pm
Forum: Knowledge Base
Topic: FFmpeg: "Too many packets buffered for output stream"
Replies: 1
Views: 7701

Re: FFmpeg: "Too many packets buffered for output stream"

I've encountered a case where increasing "-max_muxing_queue_size" up to 9999 didn't help. It was actually so that the audio stream seemed to be broken or contain no data? (not silence) It turned out that the DV camera original was already faulty. Trying to extract the source audio (just to...
by peter_b
Tue Mar 17, 2020 3:43 pm
Forum: Knowledge Base
Topic: FFmpeg: "Too many packets buffered for output stream"
Replies: 1
Views: 7701

FFmpeg: "Too many packets buffered for output stream"

[PROBLEM] With some files, I get the following error when transcoding from FFV1/PCM/MKV to H.264/AAC/MP4: Too many packets buffered for output stream 0:0 The original camera source was DV (PAL), then converted to FFV1/PCM/MKV. [SOLUTION] In most cases, adding the following argument solved the issue...
by peter_b
Fri Mar 06, 2020 9:48 pm
Forum: Knowledge Base
Topic: CA Providence: Class 'ApplicationException' not found
Replies: 0
Views: 5812

CA Providence: Class 'ApplicationException' not found

[PROBLEM] Fresh CollectiveAccess providence (v1.7.8) install on Debian9, PHP7.0 - getting the following error message when trying to initially access its folder for the first time: Fatal error: Uncaught Error: Class 'ApplicationException' not found in /var/www/html/providence/index.php:34 Stack tra...
by peter_b
Mon Feb 24, 2020 7:00 pm
Forum: Knowledge Base
Topic: Xubuntu 18.04: can't install VLC
Replies: 0
Views: 5678

Xubuntu 18.04: can't install VLC

[PROBLEM] I'm trying to install the "vlc" package on a fresh Xubuntu 18.04.4 setup, but get weird dependency errors: Reading package lists... Done Building dependency tree Reading state information... Done Some packages could not be installed. This may mean that you have requested an impos...
by peter_b
Thu Feb 13, 2020 7:53 pm
Forum: Knowledge Base
Topic: ImageMagick:
Replies: 1
Views: 4316

ImageMagick:

[PROBLEM] Trying to split an insanely-wide image (>500.000px width) in 30.000px sections: $ convert video_motion.png -crop 30000 video_motion-%02d.png Throws the following error: convert: DistributedPixelCache '127.0.0.1' @ error/distribute-cache.c/ConnectPixelCacheServer/244. convert: cache resour...