On Wed, Oct 31, 2007 at 01:07:48AM -0500, Paul B Schroeder wrote: >>> I understand that getting the kernel messages via a USB console isn't >>> reliable. But I can't get the system/rc/initscripts startup stuff via >>> ttyUSB0 either. Or is this just as unreliable.. The only way I get >>> system/rc/initscripts startup stuff via ttyUSB0 is if I set >>> 'CONSOLE=/dev/ttyUSB0' on my kernel command line.. And in that case the >>> baud rate gets changed from 115200 to 9600.. i.e. The issue I'm trying >>> to solve now, is with these messages via ttyUSB0: >> That's up to your init system, which is specific to your distro. That >> CONSOLE= line is probably what init is reading to do what you need it to >> do. I don't know about the baud rate issue, sorry, try reading the >> documentation for your distro about this. > Well, init is using /dev/console by default. This works for ttyS1, but not > ttyUSB0.. So when I have 'kernel /boot/vmlinuz-2.6.19-1.2895.uplogix.14 ro > root=/dev/hda1 panic=5 console=tty0 console=ttyS1,115200', I can do 'echo > test >/dev/console' and I see the output on ttyS1.. > > But when I have 'kernel /boot/vmlinuz-2.6.19-1.2895.uplogix.14 ro > root=/dev/hda1 panic=5 console=tty0 console=ttyUSB0,115200' and I do 'echo > test >/dev/console', I get absolutely nothing out of ttyUSB0.. > > So in my case here, adding 'CONSOLE=/dev/ttyUSB0' to the kernel command > line ends up in the environment. So init ends up using CONSOLE as it was > set in the environment.. Which I shouldn't have to do. /dev/console > should just work.. This isn't distro specific.. This should be set up in > the kernel appropriately.. Correct??
No, the boot console code doesn't modify /dev/console at all from what I can tell. sorry, greg k-h ------------------------------------------------------------------------- This SF.net email is sponsored by: Splunk Inc. Still grepping through log files to find problems? Stop. Now Search log events and configuration files using AJAX and a browser. Download your FREE copy of Splunk now >> http://get.splunk.com/ _______________________________________________ Linux-usb-users@lists.sourceforge.net To unsubscribe, use the last form field at: https://lists.sourceforge.net/lists/listinfo/linux-usb-users
