kernel prbs w/ext USB equip

[C Hamel]

On Friday 17 March 2006 05:17, Alan McKinnon wrote:
<SNIP>
>
> I'd say the first step is to turn debug logging on - I see it's
> disabled in the standard .config. First option below USB mass storage
> support. Hopefully you will get the identical behaviour and also an
> explanation in the logs.
>
> I'm not familiar with that device, what other modules does it load?
> grepping the kernel source doesn't return anything useful, and
> because everything else seems to work for you that indicates the
> problem is local to that model and/or it's drivers.
>
> I fear you will coaster a few more blanks before this is over, put it
> down to your personal contribution to the revolution :-)
>
>
> --
> Alan McKinnon
> alan at linuxholdings dot co dot za
> +27 82, double three seven, one nine three five
I *finally* have something a little more to report.  The kernel finally 
spilled its guts about the drive in question after three or four tries to get 
a CD to mount, though I have no idea what all that data means.  I kept 
getting the 'No medium found' error.  Even though I got the contents on the 
first try, it wouldn't overwrite.  I was using a brand new DVD-RW disc.

Kernel dump:
Mar 17 13:51:19 kubuntu kernel: [4353538.981000] usb 3-2: new high speed USB 
device using ehci_hcd and address 13
Mar 17 13:51:19 kubuntu kernel: [4353539.062000] scsi8 : SCSI emulation for 
USB Mass Storage devices
Mar 17 13:51:19 kubuntu usb.agent[20056]:      usb-storage: already loaded
Mar 17 13:51:58 kubuntu kernel: [4353578.082000] agpgart: Found an AGP 2.0 
compliant device at 0000:00:00.0.
Mar 17 13:51:58 kubuntu kernel: [4353578.082000] agpgart: Putting AGP V2 
device at 0000:00:00.0 into 4x mode
Mar 17 13:51:58 kubuntu kernel: [4353578.082000] agpgart: Putting AGP V2 
device at 0000:01:05.0 into 4x mode
Mar 17 13:52:40 kubuntu kernel: [4353619.768000] scsi: Device offlined - not 
ready after error recovery: host 8 channel 0 id 0 lun 0
Mar 17 13:52:40 kubuntu kernel: [4353619.768000] usb 3-2: USB disconnect, 
address 13
Mar 17 13:52:40 kubuntu kernel: [4353619.782000] c0174735
Mar 17 13:52:40 kubuntu kernel: [4353619.786000] Modules linked in: udf isofs 
sg usb_storage thermal fan button battery ac ide_cs ehci_hcd uhci_hcd natsemi 
ndiswrapper af_packet nls_iso8859_1 vfat fat radeon drm rfcomm l2cap 
bluetooth acpi_cpufreq speedstep_lib cpufreq_userspace cpufreq_stats 
freq_table cpufreq_powersave cpufreq_ondemand cpufreq_conservative pcmcia 
video tc1100_wmi sony_acpi pcc_acpi hotkey dev_acpi i2c_acpi_ec container 
ppp_deflate zlib_deflate bsd_comp ppp_async ipv6 ppp_generic slhc 
ipt_MASQUERADE ipt_REJECT iptable_nat ip_conntrack iptable_filter ip_tables 
irtty_sir sir_dev irda crc_ccitt pcspkr rtc pl2303 usbserial i2c_ali1535 
i2c_ali15x3 i2c_core ohci1394 yenta_socket rsrc_nonstatic pcmcia_core 
snd_ali5451 snd_ac97_codec snd_pcm_oss snd_mixer_oss snd_pcm snd_timer snd 
soundcore snd_page_alloc shpchp pci_hotplug ati_agp agpgart nls_cp437 ntfs 
dm_mod joydev tsdev evdev piix sr_mod sbp2 scsi_mod ieee1394 psmouse mousedev 
parport_pc lp parport md ext3 jbd processor usbcore ide_cd cdrom ide_disk 
ide_generic alim15x3 ide_core unix capability commoncap vesafb vgastate 
softcursor cfbimgblt cfbfillrect cfbcopyarea fbcon tileblit font bitblit
Mar 17 13:52:40 kubuntu kernel: [4353619.786000] CPU:    0
Mar 17 13:52:40 kubuntu kernel: [4353619.786000] EIP:    0060:[<c0174735>]    
Tainted: P      VLI
Mar 17 13:52:40 kubuntu kernel: [4353619.786000] EFLAGS: 00010286   
(2.6.12-9-386) 
Mar 17 13:52:40 kubuntu kernel: [4353619.786000] EIP is at 
sysfs_hash_and_remove+0x8/0xd0
Mar 17 13:52:40 kubuntu kernel: [4353619.786000] eax: 00000000   ebx: dcd29f00   
ecx: 00000003   edx: 00000020
Mar 17 13:52:40 kubuntu kernel: [4353619.786000] esi: c8aa2248   edi: dcd29ea0   
ebp: c7a115e4   esp: dbc51e3c
Mar 17 13:52:40 kubuntu kernel: [4353619.786000] ds: 007b   es: 007b   ss: 
0068
Mar 17 13:52:40 kubuntu kernel: [4353619.786000] Process khubd (pid: 1995, 
threadinfo=dbc50000 task=daddba20)
Mar 17 13:52:40 kubuntu kernel: [4353619.786000] Stack: dcd29f00 c8aa2248 
dcd29ea0 c7a115e4 c01ecf15 00000000 c0278347 c8aa2248 
Mar 17 13:52:40 kubuntu kernel: [4353619.786000]        c8aa2190 d255e000 
c01ecf50 c8aa2248 c8aa2000 dcd13e62 c8aa2248 d255e000 
Mar 17 13:52:40 kubuntu kernel: [4353619.786000]        d5ff4980 d255dff8 
dcd13f03 c8aa2000 00000202 d255e000 d255e004 dcd132e7 
Mar 17 13:52:40 kubuntu kernel: [4353619.786000] Call Trace:
Mar 17 13:52:40 kubuntu kernel: [4353619.786000]  [<c01ecf15>] 
class_device_del+0x62/0x92
Mar 17 13:52:40 kubuntu kernel: [4353619.786000]  [<c01ecf50>] 
class_device_unregister+0xb/0x16
Mar 17 13:52:40 kubuntu kernel: [4353619.786000]  [<dcd13e62>] 
scsi_remove_device+0x32/0x77 [scsi_mod]
Mar 17 13:52:40 kubuntu kernel: [4353619.786000]  [<dcd13f03>] 
__scsi_remove_target+0x5c/0x7f [scsi_mod]
Mar 17 13:52:40 kubuntu kernel: [4353619.786000]  [<dcd132e7>] 
scsi_forget_host+0x28/0x3f [scsi_mod]
Mar 17 13:52:40 kubuntu kernel: [4353619.786000]  [<dcd0cf86>] 
scsi_remove_host+0xc/0x57 [scsi_mod]
Mar 17 13:52:40 kubuntu kernel: [4353619.786000]  [<dd20427b>] 
storage_disconnect+0x50/0x6a [usb_storage]
Mar 17 13:52:40 kubuntu kernel: [4353619.786000]  [<dcbcc09c>] 
usb_unbind_interface+0x36/0x65 [usbcore]
Mar 17 13:52:40 kubuntu kernel: [4353619.786000]  [<c01ec138>] 
device_release_driver+0x49/0x55
Mar 17 13:52:40 kubuntu kernel: [4353619.786000]  [<c01ec2f1>] 
bus_remove_device+0x48/0x77
Mar 17 13:52:40 kubuntu kernel: [4353619.786000]  [<c01eb6dc>] 
device_del+0x43/0x6f
Mar 17 13:52:40 kubuntu kernel: [4353619.786000]  [<dcbd19cb>] 
usb_disable_device+0x77/0xe9 [usbcore]
Mar 17 13:52:40 kubuntu kernel: [4353619.786000]  [<dcbcdb77>] 
usb_disconnect+0x93/0xec [usbcore]
Mar 17 13:52:40 kubuntu kernel: [4353619.786000]  [<dcbce7c6>] 
hub_port_connect_change+0x57/0x2b2 [usbcore]
Mar 17 13:52:40 kubuntu kernel: [4353619.786000]  [<dcbcec43>] 
hub_events+0x222/0x2c6 [usbcore]
Mar 17 13:52:40 kubuntu kernel: [4353619.786000]  [<dcbcece7>] 
hub_thread+0x0/0xe8 [usbcore]
Mar 17 13:52:40 kubuntu kernel: [4353619.786000]  [<dcbced03>] 
hub_thread+0x1c/0xe8 [usbcore]
Mar 17 13:52:40 kubuntu kernel: [4353619.786000]  [<c012469a>] 
autoremove_wake_function+0x0/0x3a
Mar 17 13:52:40 kubuntu kernel: [4353619.786000]  [<dcbcece7>] 
hub_thread+0x0/0xe8 [usbcore]
Mar 17 13:52:40 kubuntu kernel: [4353619.786000]  [<c012469a>] 
autoremove_wake_function+0x0/0x3a
Mar 17 13:52:40 kubuntu kernel: [4353619.786000]  [<c0101245>] 
kernel_thread_helper+0x5/0xb
Mar 17 13:52:40 kubuntu kernel: [4353619.786000] Code: 89 02 74 03 89 50 04 c7 
41 04 00 02 20 00 89 5c 24 10 8b 46 08 89 44 24 0c 5b 5e e9 6b a4 fe ff 5b 5e 
c3 55 57 56 53 8b 44 24 14 <8b> 58 48 8b 50 08 ff 4a 70 0f 88 b9 00 00 00 8b 
53 0c 8d 6a fc 

Something's busted.  I used to be able to write DVD-RWs consistently.  
Suddenly it's b0rked.  Since I've updated twice and didn't have any trouble 
b-4 that, I suspect an update.  It's the logical choice.  Guess I'll muck 
around w/Dapper, for awhile.  Couldn't be any worse... I have yet to apply 
any updates.
-- 
	...CH

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