My internet connection falls and only returns when I restart the computer.

From: Michael <michaelmf2007(at)gmail.com>
Date: Tue Sep 18 2007 - 13:33:31 EDT

Hello everyone!

I Installed Debian 4.0 (Etch) on my notebook Toshiba Satellite A105 S2091 a couple of weeks ago and I've been facing this extremely annoying problem since then: my internet connection falls, for absolutely any apparent reason, and only returns after completely restarting the system. Nothing else works! I've already tried the internet service from somewhere else, restarting my modem, unplugging and replugging the wires, the GNOME applications, the `ifdown eth0' and `ifup eth0' commands on a shell and several combinations of these.

After discussing this on the Brasilian users list, someone pointed out the possibility of a problem with the driver for my card. The output of `lspci' gives me, among several other lines,

`
02:07.0 Ethernet controller: Realtek Semiconductor Co., Ltd. RTL-8139/8139C/8139C+ (rev 10)
'

what, I guess, indicates that Debian can see my card. After Googling a little bit I got to
http://www.linuxquestions.org/hcl/showproduct.php?product=482, where I learned that this card uses module `8139too'. But it seems like it is already loaded, as indicated the output output of `lsmod': `
ntbkmichael:/home/michael# lsmod

Module                  Size  Used by
rfcomm                 34584  0
l2cap                  21760  5 rfcomm
bluetooth              46020  4 rfcomm,l2cap
ppdev                   8676  0
parport_pc             32132  0
lp                     11012  0
parport                33256  3 ppdev,parport_pc,lp
ipv6                  226272  8
button                  6672  0
ac                      5188  0
battery                 9636  0
dm_snapshot            15552  0
dm_mirror              19152  0
dm_mod                 50232  2 dm_snapshot,dm_mirror
loop                   15048  0
joydev                  9088  0
pcmcia                 34140  0
firmware_class          9600  1 pcmcia
snd_hda_intel          17332  1
snd_hda_codec         137856  1 snd_hda_intel
snd_pcm_oss            38368  0
snd_mixer_oss          15200  1 snd_pcm_oss
rtc                    12372  0
snd_pcm                68676  3 snd_hda_intel,snd_hda_codec

- Masquer le texte des messages précédents - ,snd_pcm_oss

snd_timer              20996  1 snd_pcm
snd                    47012  8
snd_hda_intel,snd_hda_codec,snd_pcm_oss,snd_mixer_oss,snd_pcm,snd_timer
soundcore               9248  1 snd
yenta_socket           24460  1
snd_page_alloc          9640  2 snd_hda_intel,snd_pcm
psmouse                35016  0
serio_raw               6660  0
pcspkr                  3072  0
rsrc_nonstatic         11840  1 yenta_socket
pcmcia_core            36852  3 pcmcia,yenta_socket,rsrc_nonstatic
i2c_piix4               8140  0
shpchp                 33024  0
pci_hotplug            28704  1 shpchp
i2c_core               19680  1 i2c_piix4
ati_agp                 8652  0
agpgart                29896  1 ati_agp
tsdev                   7520  0
evdev                   9088  1
ext3                  119240  1
jbd                    52456  1 ext3
mbcache                 8356  1 ext3
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ide_cd                 36064  0
cdrom                  32544  1 ide_cd
8139cp                 21920  0
usbhid                 37248  0
sd_mod                 19040  3
8139too                25120  0
mii                     5344  2 8139cp,8139too
atiixp                  6064  0 [permanent]
ehci_hcd               28136  0
ohci_hcd               18276  0
sata_sil               11464  2
usbcore               112644  4 usbhid,ehci_hcd,ohci_hcd
libata                 89396  1 sata_sil
scsi_mod              124168  2 sd_mod,libata
generic                 4868  0 [permanent]
ide_core              110504  3 ide_cd,atiixp,generic
thermal                13608  0
processor              28840  1 thermal
fan                     4804  0

'

Does anybody have a clue of what might be happening? The excerpt of the output of `grep eth0 /var/log/kern.log' referring to one of the many sessions in which I've eventually lost my connection was

`
Sep 16 15:57:16 ntbkmichael kernel: eth0: RealTek RTL8139 at 0xa000, 00:a0:d1:38:4f:b6, IRQ 201
Sep 16 15:57:16 ntbkmichael kernel: eth0: Identified 8139 chip type
'RTL-8100B/8139D'

Sep 16 15:57:16 ntbkmichael kernel: eth0: link up, 100Mbps, full-duplex, lpa 0x45E1
Sep 16 16:09:27 ntbkmichael kernel: NETDEV WATCHDOG: eth0: transmit timed out
Sep 16 16:09:30 ntbkmichael kernel: eth0: Transmit timeout, status 0c 0005 c07f media 00.
Sep 16 16:09:30 ntbkmichael kernel: eth0: Tx queue start entry 6562 dirty entry 6558.

Sep 16 16:09:30 ntbkmichael kernel: eth0:  Tx descriptor 0 is 0008a042.
Sep 16 16:09:30 ntbkmichael kernel: eth0:  Tx descriptor 1 is 0008a042.
Sep 16 16:09:30 ntbkmichael kernel: eth0:  Tx descriptor 2 is 0008a042.

(queue head)
Sep 16 16:09:30 ntbkmichael kernel: eth0: Tx descriptor 3 is 0008a042. Sep 16 16:09:30 ntbkmichael kernel: eth0: link up, 100Mbps, full-duplex, lpa 0x45E1
Sep 16 16:09:42 ntbkmichael kernel: NETDEV WATCHDOG: eth0: transmit timed out
Sep 16 16:09:45 ntbkmichael kernel: eth0: Transmit timeout, status 0c 0005 c07f media 00.
Sep 16 16:09:45 ntbkmichael kernel: eth0: Tx queue start entry 4 dirty entry 0.
Sep 16 16:09:45 ntbkmichael kernel: eth0: Tx descriptor 0 is 0008a042. (queue head)

Sep 16 16:09:45 ntbkmichael kernel: eth0:  Tx descriptor 1 is 0008a04b.
Sep 16 16:09:45 ntbkmichael kernel: eth0:  Tx descriptor 2 is 0008a04b.
Sep 16 16:09:45 ntbkmichael kernel: eth0:  Tx descriptor 3 is 0008a042.
Sep 16 16:09:45 ntbkmichael kernel: eth0: link up, 100Mbps, full-duplex, lpa

0x45E1
Sep 16 16:09:57 ntbkmichael kernel: NETDEV WATCHDOG: eth0: transmit timed out
Sep 16 16:10:00 ntbkmichael kernel: eth0: Transmit timeout, status 0c 0005 c07f media 00.
Sep 16 16:10:00 ntbkmichael kernel: eth0: Tx queue start entry 4 dirty entry 0.
Sep 16 16:10:00 ntbkmichael kernel: eth0: Tx descriptor 0 is 0008a04b. (queue head)

Sep 16 16:10:00 ntbkmichael kernel: eth0:  Tx descriptor 1 is 0008a04b.
Sep 16 16:10:00 ntbkmichael kernel: eth0:  Tx descriptor 2 is 0008a05d.
Sep 16 16:10:00 ntbkmichael kernel: eth0:  Tx descriptor 3 is 0008a05d.
Sep 16 16:10:00 ntbkmichael kernel: eth0: link up, 100Mbps, full-duplex, lpa

0x45E1
'

Thank you very much for anything that would help me elucidate this mystery!

Kindest regards,
Michael

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Received on Tue Sep 18 13:34:03 2007