Messages in this thread | | | Date | Tue, 15 Jun 2004 15:00:50 -0400 | Subject | Re: more about serial console | From | foo@porto ... |
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On Tue, Jun 15, 2004 at 07:52:05PM +0100, Russell King wrote: > On Tue, Jun 15, 2004 at 02:42:29PM -0400, foo@porto.bmb.uga.edu wrote: > > On Mon, Jun 14, 2004 at 08:04:36PM -0400, foo@porto.bmb.uga.edu wrote: > > > The other weird thing I have seen is with the serial console. After > > > init loads the net bonding module and the network comes up, the serial > > > console output stops, as though I had typed ^s. If I type a character > > > (doesn't seem to matter what), instead of that character printing I see > > > the next character of console output. I have to hold down a key for a > > > few seconds to get the next few lines of output, then it starts printing > > > on its own again. I've seen this with 2.6.7-rc3-bk4 and 2.6.6, not with > > > 2.6.5 (I booted 2.6.6 by accident yesterday, I don't know how it does > > > with NFS). > > > > More experience with 2.6.7-rc3-bk6: this is basically the same, although > > the console stalled twice during one boot, once after mounting all the > > filesystems and then again after the ethernet comes up (as always). > > > > Also, I was wrong about getting one character of output for each that I > > type - it looks like I get 16 characters (if that many are available to > > be printed, seemingly). > > So it only happens when userspace is using the serial port and a few > other things are in use. > > Is anything sharing the serial port's interrupt?
Nope.
$ cat /proc/interrupts CPU0 CPU1 0: 3287097 11178094 IO-APIC-edge timer 3: 71993 20488 IO-APIC-edge serial 4: 544 14 IO-APIC-edge serial 8: 3 0 IO-APIC-edge rtc 9: 0 0 IO-APIC-level acpi 16: 121 32 IO-APIC-level sym53c8xx 24: 6370 371797 IO-APIC-level ioc0, eth0 25: 324116 0 IO-APIC-level ioc1, eth1 NMI: 88 157 LOC: 14461411 14461930 ERR: 0 MIS: 0
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