From: <Bbi...@ao...> - 2003-04-27 17:50:45
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In a message dated 4/26/2003 11:11:00 PM Eastern Standard Time, br...@mi... writes: > First I have heard of a security update affecting a COM port. Certainly possible that they plugged some exploit via a PPP connection or a modem driver bug. But more likely that they finally decided to disable unconnected devices by default (until you explicitly gave youself permission to use them - which is closer to the linux default behavior). > Maybe another program is accessing that port? Which was by far the most likely reason a couple of years ago. A mouse driver was being loaded even if you didn't need it, etc. > Do you have any other ports you can try? Tried rebooting? Good suggestions...also... Look at everything you have that CAN_OR_MIGHT have a serial port option - then make sure all the options are disabled. |
From: Neil W. <nwr...@bi...> - 2003-04-28 09:01:11
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My two cents worth, I have had lots of issues in the past with similar problems in Win2000 but not so much in XP. Some of the answers lie in - a) If windows has been started with a modem connected to this port, then it assumes that the modem is still present and has the port locked out. This is typically undone by leaving the modem of this port and restarting the system. b) A modem has been connected to the port after the system was started, but is not necessarily there now. Same solution as above. c) A RAS connection has been set-up for a modem on this port. Remove the RAS connection & reboot. d) Sometimes the above faults still persist and it is only by I) removing any modem configurations. ii) removing the COM port and then rebooting and allowing the system to redetect the port, that this problem is resolved. Other times I have not been able to get the port back at all, only a fresh install of windows fixes the problem. e) I do an extensive amount of work on PC's with multiple serial ports i.e. from 1..18 ports. Some of the equipment I connect to these ports transmits to the PC all of the time regardless as to whether the PC is on or not. (Weighbridge Scales etc) When windows starts it sometimes see's this streaming incoming data as a Mouse track ball or similar and install what it thinks are the appropriate drivers (NOT). The point is your windows may have detected something similar and loaded a driver for a fictitious device. I hope this helps. Neil Wrightson. nwrightson at bigpond dot com > -----Original Message----- > From: Bbi...@ao... [mailto:Bbi...@ao...] > Sent: Monday, 28 April 2003 3:48 AM > To: mis...@li... > Subject: Re: [misterhouse-users] Can't open device: COM1 >=20 >=20 > In a message dated 4/26/2003 11:11:00 PM Eastern Standard=20 > Time, br...@mi... writes: >=20 > > First I have heard of a security update affecting a COM port. >=20 > Certainly possible that they plugged some exploit via a PPP=20 > connection or a modem driver bug. But more likely that they=20 > finally decided to disable unconnected devices by default=20 > (until you explicitly gave youself permission to use them -=20 > which is closer to the linux default behavior). >=20 > > Maybe another program is accessing that port? >=20 > Which was by far the most likely reason a couple of years=20 > ago. A mouse driver was being loaded even if you didn't need it, etc. >=20 > > Do you have any other ports you can try? Tried rebooting? >=20 > Good suggestions...also... > Look at everything you have that CAN_OR_MIGHT have a serial=20 > port option - then make sure all the options are disabled. >=20 >=20 > ------------------------------------------------------- > This sf.net email is sponsored by:ThinkGeek > Welcome to geek heaven. > http://thinkgeek.com/sf > ________________________________________________________ > To unsubscribe from this list, go to:=20 > http://sourceforge.net/mail/?group_id=3D1365 >=20 >=20 >=20 |