Re: alpha/127248: System crashes when many (7) serial port terminals (vt320-vt510) connected to the server via com to usb adapter and 2-usb hubs.

2008-09-25 Thread Bernd Walter
On Sat, Sep 20, 2008 at 09:55:59AM +0100, Dieter wrote: > [ -hardware@ list added to existing -alpha@ thread as this > doesn't seem to be alpha specific ] > > > This is because USB is absolutely crap for this purpose. > > RS232 terminals, especially with long cables, can produce several kind > > o

Re: alpha/127248: System crashes when many (7) serial port terminals (vt320-vt510) connected to the server via com to usb adapter and 2-usb hubs.

2008-09-25 Thread Wilko Bulte
Quoting Bernd Walter, who wrote on Thu, Sep 25, 2008 at 02:54:17PM +0200 .. > On Sat, Sep 20, 2008 at 09:55:59AM +0100, Dieter wrote: > > [ -hardware@ list added to existing -alpha@ thread as this > > doesn't seem to be alpha specific ] > > > > > This is because USB is absolutely crap for this pur

Re: alpha/127248: System crashes when many (7) serial port terminals (vt320-vt510) connected to the server via com to usb adapter and 2-usb hubs.

2008-09-25 Thread Dieter
[ -usb@ added to existing thread ] > > > This is because USB is absolutely crap for this purpose. > > > RS232 terminals, especially with long cables, can produce several kind > > > of spikes and ground loops, which USB is very very sensitive about. > > > > Many things about USB are crap (thanks,

Re: alpha/127248: System crashes when many (7) serial port terminals (vt320-vt510) connected to the server via com to usb adapter and 2-usb hubs.

2008-09-25 Thread Jeremy Chadwick
On Thu, Sep 25, 2008 at 10:01:51AM +0100, Dieter wrote: > [ -usb@ added to existing thread ] > > > > > This is because USB is absolutely crap for this purpose. > > > > RS232 terminals, especially with long cables, can produce several kind > > > > of spikes and ground loops, which USB is very very

Re: alpha/127248: System crashes when many (7) serial port terminals (vt320-vt510) connected to the server via com to usb adapter and 2-usb hubs.

2008-09-25 Thread Bernd Walter
On Thu, Sep 25, 2008 at 10:01:51AM +0100, Dieter wrote: > [ -usb@ added to existing thread ] > > > > > This is because USB is absolutely crap for this purpose. > > > > RS232 terminals, especially with long cables, can produce several kind > > > > of spikes and ground loops, which USB is very very