Interesting Update Anomaly with Firefox Developer Edition (89.0b15) Linux

I upgraded to Firefox Developer Edition 89.0b15 and found that it worked very well. The next day, I did the check for updates and was told “Updates Available at” This confused me because I had checked earlier on a Windows 10 VM finding no update. When I clicked on the link, I found that … Read more

MailSpring on Linux ErrorNamespace (IMAP)

The Director of Cybersecurity where I work told me about MailSpring, an email client for Linux (Mac, and Windows) that works with Office 365 without using IMAP or POP. I discovered there is a .SlackBuild for MailSpring. Being the nerd I am, I check the MailSpring site and found a newer version (1.9.1) than the … Read more

Bugaboo with Recent Slackware-Current Update

Today, 16 February 2021, I ran into an interesting issue while using slackpkg to update a Slackware-Current virtual machine. After running slackpkg update then slackpkg upgrade-all, the update of slackpkg required me to start the update process over. When I re-ran the two commands above, I got a large number of md5sum errors. The suggestion … Read more

Slackware-current update to libcap-ng broke CIFS-tools

Earlier this week, and update to libcap-ng broke mounting my SaMBa server shares on startup. I received the error message: Unable to apply new capability set. Barcoboy on was quick to point out that the issue was libcap-ng and could be mitigated by downloading the previous version from This morning (26-Nov-2020), dr.s pointed … Read more

PHP: Fixing “ is using a unsupported protocol – This should never happen.” (again again)

After updating to PHP 7.4.10, I’m getting the dreaded “ is using a unsupported protocol – This should never happen. upgrade failed.” error message when running pecl upgrade. After a bit of searching, I found a post that suggests the command pear update would help. When I tried this, I got, “pear/pear dependency package “pear/Archive_Tar” … Read more

Building Stellarium 0.20.2 on Slackware Current

When I saw that Stellarium 0.20.2 was available, I downloaded the source from and used the .Slackbuild from tried to build it with: VERSION=0.20.2 ./stellarium.SlackBuild‘ During the config process, the build failed with the error: cmake: error while loading shared libraries: cannot open shared object file: No such file or directory After … Read more

Slackware 14.2 and Adaptec AIC94xx SCSI

I recently upgraded a Supermicros X7DB8 motherboard server from Slackware64 13.37 to Slackware64 14.2. Initially, I had issues with the built-in Adaptec AIC-9410W SAS not detecting the attached drives. After much thinking and some poking around, I finally discovered that the package kernel-firmware-20191108 is missing the firmware for this card: aic94xx-seq.fw. As an expedient, I … Read more

Burning CD-RW on Slackware from the Command Line

Due to the COVID-19 outbreak, I’ve been working from home. This caused me, for reasons that are unimportant, to learn how to burn a CD-RW from the command line in Slackware Linux. The first step was to erase the media in the drive. (While DVD-RW media can be overwritten, I’ve always had to erase CD-RW … Read more

Rsync: error starting client-server protocol (code 5)

While setting up a new server, I encountered the, sometime vague, “error starting client-server protocol (code 5)” when trying to rsync the files from the box to be replaced. On the source server, the in /var/log/messages, I found: Apr 12 08:59:09 REDACTED rsyncd[19871]: auth failed on module etc from REDACTED (REDACTED): invalid challenge response I … Read more