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Jeroen W. Pluimers on .NET, C#, Delphi, databases, and personal interests

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Archive for the ‘ThinkPad’ Category

Operant Conditioning by Software Bugs – Embedded in Academia

Posted by jpluimers on 2020/07/21

Good to remember both these:

[WayBack] Operant Conditioning by Software Bugs – Embedded in Academia which means when using a system, you subconsciously start behaving around it’s issues. This also happens when you the software you wrote the software for such a system: you hardly test the things that you broke.

The magic SysReq key on Linux systems running on PC-hardware allows you to sync/mount read-only/shutdown a system by keyboard (and many more options – see the Wikipedia list below). Do not forget to enable this as it is disabled by default. And remember that many laptops forego the SysReq key (as do Mac systems).

The order while holding Alt-SysReq down is S,U,B…

Both via [WayBack] Kristian Köhntopp – Google+


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Posted in *nix, *nix-tools, Development, Keyboards and Keyboard Shortcuts, Power User, Software Development, ThinkPad | Leave a Comment »

ThinkPad USB Keyboard With TrackPoint – Overview

Posted by jpluimers on 2020/07/13

I wish this keyboard was still on the market [WayBackThinkPad USB Keyboard With TrackPoint – Overview.

Known as 55Y9053, 55Y9003 and 57Y4641 (and a few others like  the English/EUR 55Y9042 if you count the various localised layouts at [WayBack] ThinkPad USB Keyboard with TrackPoint – Service parts), it was one of the best keyboards made apart from the big delete key (that was better in the predecessor, but that one lacked windows keys: [WayBack] Lenovo ThinkPad USB Keyboard Review | NotebookReview).

It is about the same as the Thinkpad25, which added a touchpad: [WayBack] The 25th-anniversary ThinkPad: Every laptop should add some retro appeal | Ars Technica Review: A seven-row keyboard? Matte screen? TrackPoint? The all-business black body? Swoon


Posted in History, Power User, ThinkPad, UltraNav keyboards | Leave a Comment »

I’d probably take a W520 over it, but Lenovo Thinkpad T420: Another excellent, inexpensive Linux laptop | Open-Source Routing and Network Simulation

Posted by jpluimers on 2018/05/25

Reading the below, I’d probably go for the W520. Both series are the final ones having a 7-row keyboard.

I recently purchased a used Lenovo Thinkpad T420 laptop to replace the Lenovo Thinkpad T400 I was previously using as my main platform for researching open-source network simulators and emulators. …

Source: [WayBack]Lenovo Thinkpad T420: Another excellent, inexpensive Linux laptop | Open-Source Routing and Network Simulation

Do not get the T420s as it is the slim-line version which is harder to upgrade and for some users gives thermal issues.

The T420 has only USB2, the W520 has USB3, better screen, faster processors and allows more memory (32 gigabyte for quad core processors).


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Posted in Power User, ThinkPad, UltraNav keyboards | Leave a Comment »

David Hill – of ThinkPad design fame – is going beyond “Black Paint” – via: Rewiring | Lenovo

Posted by jpluimers on 2017/06/29

David Hill – of ThinkPad design fame – is going beyond “Black Paint”. It means he will be far less involved with [WayBackThinkPad: Industrial design, more with other design and – very important – his loved ones.

[WayBackRewiring | Lenovo:

Today I’m announcing my “rewiring”. I want to broaden my view and create the opportunity to do more in the field of design.


Via Petr Vones.

Posted in History, Power User, ThinkPad | Leave a Comment »

InitialKeyboardIndicators registry setting to fix NumLock in a certain state.

Posted by jpluimers on 2016/09/30

There are odd things with the InitialKeyboardIndicators registry setting. Technet only documents bitflag value 2.

According to the docs it should be a bitflag, but sometimes you encounter InitialKeyboardIndicators value 2147483648 (0x80000000) especially as part of the .DEFAULT profile at HKEY_USERS.DEFAULT\Control Panel\Keyboard.

The problem I had was having these symptoms:

  1. while logging in locally, I manually turned of the NumLock (as I have a 46W6740 UltraNav keyboard without a numeric keypad)
  2. after logging in locally, it magically turned itself on even with InitialKeyboardIndicators=0 in my local profile at HKEY_CURRENT_USER\Control Panel\Keyboard.
  3. after logging in locally and turning it off, future local logons would keep it off
  4. after logging in remotely, it would magically turn itself on while logged in
  5. after having logged in remotely, the local logon console would have it turned on again

After reading Num Lock problem: Strange number in InitialKeyboardIndicators in Registry, I set both values to 0.

Now that it is 0 in both at HKEY_USERS.DEFAULT\Control Panel\Keyboard and HKEY_CURRENT_USER\Control Panel\Keyboard, symptoms 4-5 still hold. Strange.

It is not the same problem as Num Lock state not retained after resume from Hybrid Shutdown in Windows 8 and Windows Server 2012.

If it persist, I might just put a script in: [Partially Solved: re-wired keyboard lol] Registry key “InitialKeyboardIndicators” NEVER keeps NumLock ON + ScrollLock ON (6) at startup and reverts back to NumLock ON (2).


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Posted in Keyboards and Keyboard Shortcuts, Power User, ThinkPad, UltraNav keyboards, Windows | Leave a Comment »

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