I have also the same problem that i get a "Tx Unit Hang" after some
minutes working with this network card.
~$ uname -a
Linux PC10 2.6.32-5-amd64 #1 SMP Tue Jun 14 09:42:28 UTC 2011 x86_64
GNU/Linux
Seems to be an old driver problem that is resistant to be fixed.
I will not try to fix a problem that cannot be fixed for years. ;-)
So I will sell this stupid IBM PRO/1000 MT (that have nothing Pro) and i
will take a simply but working RTL 8169 card now for gigabit network.
[ 737.804748] e1000: eth3: e1000_clean_tx_irq: Detected Tx Unit Hang
[ 737.804753] Tx Queue <0>
[ 737.804755] TDH <db>
[ 737.804757] TDT <e0>
[ 737.804760] next_to_use <e0>
[ 737.804762] next_to_clean <db>
[ 737.804764] buffer_info[next_to_clean]
[ 737.804766] time_stamp <10001a8cf>
[ 737.804768] next_to_watch <dc>
[ 737.804770] jiffies <10001ab8b>
[ 737.804772] next_to_watch.status <0>
[ 739.804730] e1000: eth3: e1000_clean_tx_irq: Detected Tx Unit Hang
[ 739.804734] Tx Queue <0>
[ 739.804737] TDH <db>
[ 739.804739] TDT <e0>
[ 739.804741] next_to_use <e0>
[ 739.804743] next_to_clean <db>
[ 739.804745] buffer_info[next_to_clean]
[ 739.804747] time_stamp <10001a8cf>
[ 739.804749] next_to_watch <dc>
[ 739.804751] jiffies <10001ad7f>
[ 739.804753] next_to_watch.status <0>
...
[ 846.968388] e1000: eth3 NIC Link is Up 1000 Mbps Full Duplex, Flow
Control: RX/TX
[ 854.804251] e1000: eth3: e1000_clean_tx_irq: Detected Tx Unit Hang
[ 854.804255] Tx Queue <0>
[ 854.804258] TDH <1c>
[ 854.804260] TDT <29>
[ 854.804262] next_to_use <29>
[ 854.804264] next_to_clean <1c>
[ 854.804266] buffer_info[next_to_clean]
[ 854.804268] time_stamp <100021bc2>
[ 854.804270] next_to_watch <1c>
[ 854.804272] jiffies <100021dcd>
[ 854.804274] next_to_watch.status <0>
[ 856.804231] e1000: eth3: e1000_clean_tx_irq: Detected Tx Unit Hang
[ 856.804235] Tx Queue <0>
[ 856.804238] TDH <1c>
[ 856.804240] TDT <29>
[ 856.804242] next_to_use <29>
[ 856.804244] next_to_clean <1c>
[ 856.804246] buffer_info[next_to_clean]
[ 856.804248] time_stamp <100021bc2>
[ 856.804250] next_to_watch <1c>
[ 856.804252] jiffies <100021fc1>
[ 856.804254] next_to_watch.status <0>
Regards
Karsten
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