Odd problem - screen brightness

Mar 5, 2009
I'm playing with tcmd v17 (yes, I know it's an old version) on an HP Spectre x360. I find that whenever I run tcc or tcmd the brightness goes to full. As soon as I exit tcc or tcmd the brightness goes back to normal.

Windows 10 Pro v1607.

This doesn't happen if I start Windows CMD.

Any ideas? I don't know if if happens with v20, I'm worried about disturbing my current installation.

It is related to tcc running; if I close the tcc session that starts when I run tcmd the brightness goes back to normal.


Staff member
May 14, 2008
Are you talking about the overall screen brightness? TCMD and TCC do not do anything to change the hardware brightness. (I don't even know *how* to do that programmatically.)

If you're referring to the console or TCMD window only -- are you running with ANSI enabled (and an ANSI prompt)?
Mar 5, 2009
I'm talking about overall screen brightness. It's almost like the screen driver that controls brightness sees tcc do something that it thinks means the screen needs to be bright. I wouldn't expect it to be something you intend to have happen but a weird side effect.

I fully expected to find a dos prompt did it too, but it doesn't.
Mar 5, 2009
Batch file that runs on Startup in TCC window:
@cls white on blue
alias/r c:\tcmd\tcmd.ali
@set COMSPEC=C:\tcmd\tcc.EXE
prompt $P -$g
@setdos /i-reboot
@setdos /i-delay
@set .pdf=start
@set .zip=start
@cd d:\
@cd c:\

There is no TCStart.btm.

D:\ ->plugin
TCC: No plugins loaded
Similar threads
Thread starter Title Forum Replies Date
R Odd Behaviour With NET USE Support 3
mfarah WAD Odd behaviour with command-line arguments on TCMD. Support 7
Dan Glynhampton Documentation v15 help: More odd mailto: links in the help Support 8
Charles Dye Odd behavior after using OPTION "Advanced" tab Support 2
C odd behavior of "dir" Support 0
D odd experience updating tcmd 13 Support 2
H Very odd issue with Help in 12.10.67 Support 3
J Odd V12 TCMD issue Support 5
Fross Odd IF behavior Support 3
J Odd OPTION behavior Support 1
Dick Johnson Weird Color Problem Support 8
fishman@panix.com Problem with 27.15 Support 2
M Problem with VSDevCmd.bat in VS 16.7.3 Support 0
R Problem with @INT[ value] in V26 Support 9
M Selecting test "off by one" problem in Take command Support 4
Alpengreis UTF-8 problem in TCC related to Python Support 7
K_Meinhard Small problem in german IDE 26 Support 3
B Problem with color in nested shells Support 1
Joe Caverly Problem creating and switching to a DESKTOP Support 9
vefatica Another popup problem Support 10
Alpengreis ffind dialog (/W) problem Support 4
Alpengreis [TCMD v25.00.24] Small space problem with the DE translation in Prefs-GUI Support 1
Alpengreis [TCMD v25.00.24] Problem with copy and paste and the # char via mouse in TCC Support 6
A Problem with functions @int @decimal and identifying Powershell as a shell. Support 12
B IF command problem in tcexit.btm Support 9
fishman@panix.com Problem at Startup of TCC Support 3
P Problem with SFTP copies Support 7
P Problem with FTP copies Support 10
Jay Sage Problem with Context Menu Copy+Paste+Run Key Assignment Support 7
R Problem with %_do_loop in nested do loops Support 2
fishman@panix.com New Problem with later Windows 10 Support 10
Peter Murschall A little problem with LEAVE and COMMENT Support 5
M Handling of %~I problem Support 4
WinLanEm FOR problem Support 18
K Problem With SCRPUT /u Support 3
vefatica What's TCMD's problem with ^e[0m? Support 13
Peter Murschall IDE: RTL with non-English resources-problem is back in Build 28 Support 4
rps Regex problem: \xnn not recognized as a hex character Support 0
rps PRIORITY LOW problem Support 1
old coot Regex problem: \xnn not recognized as a hex character Support 12
vefatica Another problem with build 22. Support 3
Alpengreis [23.x] Download-Problem Support 2
S Problem with " Support 3
C Problem navigating forums Support 11
x13 Problem listing repository files using DIR http(s)://... Support 8
Joe Caverly Problem with TEE in v22 Support 2
Alpengreis Problem with thousands delimiter and colors Support 17
M Take Command 18, migrating to another machine, license problem. Support 1
B TCC 21.01.50 Problem with ALIAS /r and SET /r Support 2
rps How to? @search problem Support 2

Similar threads