I experienced display dimming when I connected a serial to usb cable without adding a null modem adapter. My cable was also a Prolific cable. I would suggest getting a null modem adapter or cable.
On Sat, Apr 13, 2019 at 6:37 AM Thomas Morehouse <[email protected]> wrote: > Thanks Peter. That is interesting. I've tried the usb/serial > cable/adapter on my M100 and M102. On both, the screen immediately dims > and disappears completely at normal contrast setting; that's at the cold > boot menu alone. Same when I'm in Telcom. I have to turn the contrast > up to maximum just to be able to read the screen. And this happens whether > it's connected to anything or not. > > I don't have a "plain" serial cable to try., to see if it's the cable or > the Prolific usb part causing the problem. I do have another usb/serial > cable/adapter (Wyse), which doesn't cause a dimming problem - but that one > isn't recognized by my Dell laptop or desktop. Wyse is now Dell, there are > no Wyse drivers to be found, and Win10 says "no driver available" after > doing its "internet search". > > Tom M. > > > On Fri, Apr 12, 2019 at 11:26 PM Peter Noeth <[email protected]> wrote: > >> No, my USB/Serial cable *does not* change the display contrast of my >> T102 or M100 when connected to either my HP Mini 100e laptop or my Dell >> WinXP desktop computer. >> >> Neither does my standard serial cable when connected to my Dell WinXP >> desktop computer and either the T102 or M100. >> >> Regards, >> >> Peter >> > > -- Eric Miller http://pragmaticpizza.blogspot.com/ https://github.com/eric-john-miller
