Bug#391459: linux-image-2.6.17-2-686: 8250/serial port not usable, ttyS0: LSR safety check engaged! message
Package: linux-image-2.6.17-2-686
Version: 2.6.17-9
Severity: important
Hi,
I've seen different bugs related to serial ports and the 8250 driver but
not exactly like mine, so here you get a new report (can it be that the
driver is pretty broken in the 2.6.17 kernel? :-> ).
Anyway, even though everything seems pretty OK (modules loaded, device
files present, kernel recognizes the port), I'm not able anymore to sync
with jpilot on /dev/ttyS0 under kernel 2.6.17 (I tested it: it still works
perfectly under kernel 2.6.16-18), telling me that:
pi_bind error: /dev/ttyS0 No such device
Check your serial port and settings
Exiting with status SYNC_ERROR_BIND
I get similar errors using pilot-link tools, and each time I try to access the
serial port, I get a new "ttyS0: LSR safety check engaged!" message in
dmesg.
I set the bug to important because I will have to rollback to 2.6.16;
without ability to sync PC and Palm, I can't really work.
I put some more info below, don't hesitate to tell me if you need more.
Thanks for your help, have a nice week-end,
Eric
$ dmesg | grep tty
serial8250: ttyS0 at I/O 0x3f8 (irq = 4) is a 16550A
serial8250: ttyS2 at I/O 0x3e8 (irq = 4) is a 16550A
00:02: ttyS0 at I/O 0x3f8 (irq = 4) is a 16550A
ttyS0: LSR safety check engaged!
ttyS0: LSR safety check engaged!
ttyS0: LSR safety check engaged!
ttyS2: LSR safety check engaged!
[...]
$ setserial -g /dev/ttyS?
/dev/ttyS0: No such device
/dev/ttyS1, UART: unknown, Port: 0x02f8, IRQ: 3
/dev/ttyS2, UART: unknown, Port: 0x0000, IRQ: 0
/dev/ttyS3, UART: unknown, Port: 0x02e8, IRQ: 3
$ ll /dev/ttyS?
crw-rw---- 1 root dialout 4, 64 2006-10-06 20:02 /dev/ttyS0
crw-rw---- 1 root dialout 4, 65 2006-10-06 20:02 /dev/ttyS1
crw-rw---- 1 root dialout 4, 66 2006-10-06 20:02 /dev/ttyS2
crw-rw---- 1 root dialout 4, 67 2006-10-06 20:02 /dev/ttyS3
$ find /sys -name \*ttyS?
/sys/class/tty/ttyS0
/sys/class/tty/ttyS3
/sys/class/tty/ttyS2
/sys/class/tty/ttyS1
/sys/devices/pnp0/00:02/tty:ttyS0
/sys/devices/platform/serial8250/tty:ttyS3
/sys/devices/platform/serial8250/tty:ttyS2
/sys/devices/platform/serial8250/tty:ttyS1
$ ll /sys/class/tty/ttyS0
total 0
-r--r--r-- 1 root root 4096 2006-10-06 18:17 dev
lrwxrwxrwx 1 root root 0 2006-10-06 20:02 device ->
.../../../devices/pnp0/00:02
--w------- 1 root root 4096 2006-10-06 18:17 uevent
- ttyS2 is set quiet for use by irda-utils (which works)
- parameters of the port are correct as compared with Windows
-- System Information:
Debian Release: testing/unstable
APT prefers testing
APT policy: (990, 'testing'), (500, 'unstable'), (1, 'experimental')
Architecture: i386 (i686)
Shell: /bin/sh linked to /bin/bash
Kernel: Linux 2.6.17-2-686
Locale: LANG=en_IE.UTF-8, LC_CTYPE=en_IE.UTF-8 (charmap=UTF-8)
Versions of packages linux-image-2.6.17-2-686 depends on:
ii initramfs-tools [linux-initra 0.80 tools for generating an initramfs
ii module-init-tools 3.2.2-3 tools for managing Linux kernel mo
Versions of packages linux-image-2.6.17-2-686 recommends:
ii libc6-i686 2.3.6.ds1-4 GNU C Library: Shared libraries [i
-- debconf information:
linux-image-2.6.17-2-686/postinst/old-initrd-link-2.6.17-2-686: true
linux-image-2.6.17-2-686/postinst/old-dir-initrd-link-2.6.17-2-686: true
linux-image-2.6.17-2-686/preinst/lilo-initrd-2.6.17-2-686: true
linux-image-2.6.17-2-686/postinst/depmod-error-initrd-2.6.17-2-686: false
linux-image-2.6.17-2-686/postinst/create-kimage-link-2.6.17-2-686: true
linux-image-2.6.17-2-686/preinst/lilo-has-ramdisk:
linux-image-2.6.17-2-686/preinst/already-running-this-2.6.17-2-686:
linux-image-2.6.17-2-686/preinst/bootloader-initrd-2.6.17-2-686: true
linux-image-2.6.17-2-686/preinst/initrd-2.6.17-2-686:
linux-image-2.6.17-2-686/preinst/abort-install-2.6.17-2-686:
linux-image-2.6.17-2-686/preinst/elilo-initrd-2.6.17-2-686: true
shared/kernel-image/really-run-bootloader: true
linux-image-2.6.17-2-686/preinst/failed-to-move-modules-2.6.17-2-686:
linux-image-2.6.17-2-686/postinst/bootloader-test-error-2.6.17-2-686:
linux-image-2.6.17-2-686/prerm/removing-running-kernel-2.6.17-2-686: true
linux-image-2.6.17-2-686/preinst/abort-overwrite-2.6.17-2-686:
linux-image-2.6.17-2-686/postinst/old-system-map-link-2.6.17-2-686: true
linux-image-2.6.17-2-686/preinst/overwriting-modules-2.6.17-2-686: true
linux-image-2.6.17-2-686/postinst/kimage-is-a-directory:
linux-image-2.6.17-2-686/prerm/would-invalidate-boot-loader-2.6.17-2-686: true
linux-image-2.6.17-2-686/postinst/depmod-error-2.6.17-2-686: false
linux-image-2.6.17-2-686/postinst/bootloader-error-2.6.17-2-686:
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