"recently I installed RHEL 5 on a brand new server" -what kind of server hardware...check to make sure your network card is supported properly... -----Original Message----- From: redhat-list-bounces@xxxxxxxxxx [mailto:redhat-list-bounces@xxxxxxxxxx] On Behalf Of Götz Reinicke Sent: Tuesday, April 03, 2007 5:40 AM To: General Red Hat Linux discussion list Subject: RHEL 5 Network problems - eth0: e1000_clean_tx_irq: Detected Tx Unit Hang Hi, recently I installed RHEL 5 on a brand new server. Doing a yum update, I noticed some networkproblems - network slowdown and stopping at all. Doing some googling on the log message told me to do a "ethtool -K eth0 tso off" but this didn't solve the troblem. After one ... two ... minutes the problem is still there. The kernel is 2.6.18-8.1.1.el5. Any ideas what to check or any hints? What information may I provide? The logmessage is: Apr 2 21:12:52 server10504 kernel: e1000: eth0: e1000_clean_tx_irq: Detected Tx Unit Hang Apr 2 21:12:52 server10504 kernel: Tx Queue <0> Apr 2 21:12:52 server10504 kernel: TDH <ca> Apr 2 21:12:52 server10504 kernel: TDT <cb> Apr 2 21:12:52 server10504 kernel: next_to_use <cb> Apr 2 21:12:52 server10504 kernel: next_to_clean <ca> Apr 2 21:12:52 server10504 kernel: buffer_info[next_to_clean] Apr 2 21:12:52 server10504 kernel: time_stamp <115faf5> Apr 2 21:12:52 server10504 kernel: next_to_watch <ca> Apr 2 21:12:52 server10504 kernel: jiffies <115ff5d> Apr 2 21:12:52 server10504 kernel: next_to_watch.status <0> Apr 2 21:12:54 server10504 kernel: e1000: eth0: e1000_clean_tx_irq: Detected Tx Unit Hang Apr 2 21:12:54 server10504 kernel: Tx Queue <0> Apr 2 21:12:54 server10504 kernel: TDH <ca> Apr 2 21:12:54 server10504 kernel: TDT <cb> Apr 2 21:12:54 server10504 kernel: next_to_use <cb> Apr 2 21:12:54 server10504 kernel: next_to_clean <ca> Apr 2 21:12:54 server10504 kernel: buffer_info[next_to_clean] Apr 2 21:12:54 server10504 kernel: time_stamp <115faf5> Apr 2 21:12:54 server10504 kernel: next_to_watch <ca> Apr 2 21:12:54 server10504 kernel: jiffies <116072d> Apr 2 21:12:54 server10504 kernel: next_to_watch.status <0> Apr 2 21:12:56 server10504 kernel: e1000: eth0: e1000_clean_tx_irq: Detected Tx Unit Hang Apr 2 21:12:56 server10504 kernel: Tx Queue <0> Apr 2 21:12:56 server10504 kernel: TDH <ca> Apr 2 21:12:56 server10504 kernel: TDT <cb> Apr 2 21:12:56 server10504 kernel: next_to_use <cb> Apr 2 21:12:56 server10504 kernel: next_to_clean <ca> Apr 2 21:12:56 server10504 kernel: buffer_info[next_to_clean] Apr 2 21:12:56 server10504 kernel: time_stamp <115faf5> Apr 2 21:12:56 server10504 kernel: next_to_watch <ca> Apr 2 21:12:56 server10504 kernel: jiffies <1160efd> Apr 2 21:12:56 server10504 kernel: next_to_watch.status <0> Apr 2 21:12:57 server10504 kernel: NETDEV WATCHDOG: eth0: transmit timed out Apr 2 21:13:00 server10504 kernel: e1000: eth0: e1000_watchdog: NIC Link is Up 1000 Mbps Full Duplex -- Götz Reinicke IT Koordinator Tel. +49 7141 969 420 Fax +49 7141 969 55 420 E-Mail goetz.reinicke@xxxxxxxxxxxxxxx Filmakademie Baden-Württemberg GmbH Mathildenstr. 20 71638 Ludwigsburg www.filmakademie.de Eintragung Amtsgericht Stuttgart HRB 205016 Vorsitzender des Aufsichtsrats: Dr. Christoph Palmer, MdL, Minister a.D. 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