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Technical notes
This list contains a small knowledge base of problems I encountered, and the solutions I found.
Articles
Title
Created Date
Sendmail TLS error
15 September 2024
Turning off screen blanking on an old Raspberry Pi 2/3
11 September 2024
Force XFS root filesystem check on CentOS/RHEL/Oracle Linux
19 June 2024
Using GitHub's fine-grained tokens
23 May 2024
Locked out of RV320 admin interface with "Bad Gateway"
09 May 2024
A Mandelbrot set
07 April 2024
Intrusion response
03 September 2023
Copying a Joomla! site
04 August 2023
GPT-4 the programmer
29 April 2023
GPT-4 and chess
28 April 2023
Mail forwarding with Dovecot virtual accounts
07 April 2023
Printing formatted code in ChatGPT
29 March 2023
Audio delay with ffmpeg copy
28 November 2022
Click OK to automatically reload Skype for Web
02 October 2021
Setting up DKIM with sendmail
17 April 2021
Getting rid of full-screen Windows 10 nag prompts
09 June 2020
Advanced search in Outlook
06 June 2020
Windows Update fails with 0x8024a21e
02 June 2020
Android 10 phone turns back on after power button is pressed
04 February 2020
Making Redmine display PDFs in-browser
15 November 2019
Setting up Dovecot and Sendmail with virtual domains
02 November 2019
CHM (Help file) viewer show TOC but not content on Windows 10
29 October 2019
Changing the aspect ratio at constant resolution using ffmpeg
27 August 2019
External drives and Windows Update
21 August 2019
Upgrading PHP to 5.6 on CentOS 7
10 April 2019
CentOS 7: yum keeps installing debug kernel entries in grub2.cfg
15 August 2018
TV repair: Loud buzz from circuit board of SANYO AVM-2664U CRT television
18 March 2018
Fixing The Saboteur
20 January 2018
Cannot rename (move) /home in CentOS 7
02 December 2017
Prevent Windows from using external drives for installs
02 December 2017
SharePoint 2016 stand-alone configuration
08 August 2017
Reverse DNS for Azure VM
08 August 2017
Windows debugging
06 August 2017
Failure to view Windows 10 shares on Linux host
20 July 2017
Joomla 3.7 error on PHP 5.4.16
06 May 2017
Broken Ghostscript and related tools in CentOS 7
29 March 2017
Let's Encrypt certificates not trusted by Chrome on Android
12 February 2017
How iptables are processed (packet traverse map)
19 January 2017
Disappearing Notification Area tooltips
01 June 2016
No HDMI audio after AMD driver update
06 March 2016
Chrome breaks MathJax - a workaround
22 January 2016
Hardware hacking cable decoders, part II
14 October 2015
Joomla folders not writable on CentOS 7
21 September 2015
Google Chrome: Server has a weak ephemeral Diffie-Hellman public key
12 September 2015
Rooting, encrypting, unbricking a Galaxy S3
31 March 2015
Joomla 3.4 upgrade, weblinks and allweblinks
20 March 2015
Hardware hacking cable decoders
17 February 2015
No non-HDMI audio after updating AMD graphics driver
03 January 2015
Quora answer: Reverse engineering code
18 November 2014
Converting Excel charts to EPS
16 November 2014
Quora answer: Turning off terminal buffering
16 July 2014
Rewriting the URL in the browser title bar
15 July 2014
MySQL replication and IP address change
14 September 2013
A slide-show screensaver for the Windows 7 login screen
11 September 2013
Flickering windows, "Not Responding" in title bar
11 September 2013
Joomla error 'You cannot access the private section of this site' when logging in
03 September 2013
Moving or deleting Outlook's IMAP PST file
30 June 2013
Windows Media Player crashes when opening AVI files
27 June 2013
Reading old AWD (FaxView) files
17 December 2012
TSCLIENT share no longer accessible in Windows XP mode
08 December 2012
Internet Explorer (IE8) crashes when attempting to update the "Windows Update" control
10 July 2012
Plotting derivatives in GNUPLOT
18 May 2012
Deleting hidden columns in SharePoint 2010
03 March 2012
Anonymous access to a SharePoint 2010 Web site
04 January 2012
SharePoint 2010 Central Administration - controls disabled
04 January 2012
Windows 98/ME Samba access failure
02 January 2012
Perl and CPAN (and SpamAssassin)
14 December 2011
Superscript in CSS
14 December 2011
SharePoint 2010 development
06 December 2011
OpenCOBOL environment variables, external functions
05 December 2011
Corrupt /var/run/utmp on Linux
14 January 2011
What is the password for the XPMUser account?
14 January 2011
Infinite redirect loop (ErrorPage.aspx) in Axosoft OnTime's Customer Portal
04 May 2010
Maple and Meijer's G-function: a numerical instability and a cure
26 August 2007
Recompiling Qt for Slackware
15 July 2007
Error "unresolved external symbol WinMain" when compiling for WinCE
29 May 2007
ATIRW.DLL failed to register during ATI Remote Wonder installation
31 March 2007
Remote Desktop Fails to Shut Down after Application Exits
20 March 2007
The Win 16 Subsystem has insufficient resources
04 November 2006
How to stop Ora9ias_homeEMWebsite without a popup dialog
05 September 2006
Oracle 9i Application Server restart failure
27 August 2006
Using mktime() to convert UTC dates
24 February 2006
Oracle 9i AS error "No ApplicationInfo is associated with application named: appname"
13 February 2006
FoxPro application fails with I/O Operation Failure
13 October 2005
HTML combo boxes
11 October 2005
Unexpected error (1072) occurred at line 5218 in setup.c
11 October 2005
Copying encrypted files to a non-encrypted destination in Windows
04 October 2005
How to enable software RAID (mirroring) in Windows XP
14 August 2005
Creating a bootable Windows XP CD with custom drivers
30 July 2005
Error 1024 in InstallShield X Express
25 July 2005
Oracle 9i AS installation fails with "Invalid database domain name"
25 July 2005
Oracle Cheat Sheet
25 July 2005
Energizer FileSaver application handle leak
15 January 2005
Ability to record MP3 format lost on Windows XP
14 January 2005
Windows 2000 multilink connection ignores hang-up rules
14 January 2005
Where did my default beep go?
27 December 2004
Numbered equations and other scientific publishing tips
15 November 2004
IDispatch::Invoke returns E_PARAMNOTFOUND
13 November 2004
ProFTPD failure (hangs with 100% CPU utilization)
13 August 2004
Compiling Regina on Slackware 9.1
02 July 2004
Invalid Drive X:\ (Error 1327) when attempting to reinstall Office 2003
05 February 2004
Using pcAnywhere on TCP-only connections
05 February 2004
Running VMware in a virtual frame buffer
09 November 2003
Window Placement in Mozilla Firebird
30 October 2003
Testing sendmail relay filtering
13 August 2003
Soundblaster-16 Driver Parameters for Linux
11 August 2003
IDEA plugin fails to work with GPG/GnuPG
03 August 2003
Error: bad register name `%%eax' when compiling in-line assembly with GNU C
30 July 2003
Jump logic with inline assembly in Visual C++
30 July 2003
Intermittent mouse movement and other VMware performance issues
11 July 2003
Browser bookmarks on a Motorola Timeport 280 phone
21 May 2003
Bandwidth limiting in Apache server
08 April 2003
Using regex maps in sendmail
03 March 2003
Apache upgrade disables secure Web site
27 February 2003
PHP fails with 'Call to undefined function: mysql_connect()'
27 February 2003
Internal error when trying to renew a DHCP lease
17 February 2003
Checking the argument of HELO/EHLO in sendmail
21 December 2002
Bootable Linux on a mirrored partition
11 December 2002
HTML special characters
10 December 2002
Using Portage Plus (Rogers AT&T GPRS data service) with Linux
07 September 2002
Rogers AT&T GPRS data service without Portage Plus software
06 September 2002
Graphical traffic monitoring
24 August 2002
ODBC and MySQL crash with OpenOffice
16 August 2002
Linux cdrecord fails (and system may hang)
27 July 2002
Linux cdrecord stops with "No such device. Cannot open '/dev/pg0'"
26 July 2002
Samba Prints Blank Page After Print Job
15 June 2002
A Simple Encryption Method
12 June 2002
Broken NTP daemon
30 May 2002
Broken SIGALRM on Linux
30 May 2002
System Hangs at "Verifying DMI Pool Data" Message
23 May 2002
Failure to start PCMCIA CD-ROM drive under Linux
22 May 2002
Undefined symbol 'dbm_fetch' with the Apache server
20 April 2002
Using the TENSOR packages in GPL MAXIMA
25 February 2002
No Internet subscription option with Norton Antivirus
19 October 2001
Sound for DOS Programs under Windows NT
03 September 2001
Windows 2000 Setup Failure on a SuperMicro P6DLF Motherboard
03 September 2001
Window Placement in Internet Explorer
28 March 2001
How can noise improve signal quality?
27 December 2000
Dead keyboard = dead motherboard? Not necessarily
31 October 2000
Invalid command 'LoadModule' with the Apache Server
23 August 2000
Using Two NE2000-compatible Network Cards in a Linux machine
19 August 2000
Mixing digital audio
13 August 2000
An IP tunnelling problem: A case study
28 February 2000
Creative DVD on multiprocessor NT systems
05 May 1999