Hello Mayby the following references helps: http://www.mail-archive.com/e1000-devel@lists.sourceforge.net/msg01152.html I still geht the following errors if I plug in a network cabel (You get the error only with more then 4GB memory): [ 224.836006] ADDRCONF(NETDEV_CHANGE): eth2: link becomes ready [ 226.805038] e1000: eth2: e1000_clean_tx_irq: Detected Tx Unit Hang [ 226.805043] Tx Queue <0> [ 226.805046] TDH <4> [ 226.805048] TDT <4> [ 226.805050] next_to_use <4> [ 226.805052] next_to_clean <0> [ 226.805054] buffer_info[next_to_clean] [ 226.805056] time_stamp <ffffb69b> [ 226.805058] next_to_watch <0> [ 226.805060] jiffies <ffffb885> [ 226.805062] next_to_watch.status <0> [ 228.804222] e1000: eth2: e1000_clean_tx_irq: Detected Tx Unit Hang [ 228.804227] Tx Queue <0> [ 228.804230] TDH <4> [ 228.804232] TDT <4> [ 228.804234] next_to_use <4> [ 228.804236] next_to_clean <0> [ 228.804238] buffer_info[next_to_clean] [ 228.804240] time_stamp <ffffb69b> [ 228.804242] next_to_watch <0> [ 228.804244] jiffies <ffffba79> [ 228.804247] next_to_watch.status <0> [ 229.080126] e1000: eth2 NIC Link is Down lspci: 00:00.0 RAM memory: nVidia Corporation C51 Host Bridge (rev a2) 00:00.1 RAM memory: nVidia Corporation C51 Memory Controller 0 (rev a2) 00:00.2 RAM memory: nVidia Corporation C51 Memory Controller 1 (rev a2) 00:00.3 RAM memory: nVidia Corporation C51 Memory Controller 5 (rev a2) 00:00.4 RAM memory: nVidia Corporation C51 Memory Controller 4 (rev a2) 00:00.5 RAM memory: nVidia Corporation C51 Host Bridge (rev a2) 00:00.6 RAM memory: nVidia Corporation C51 Memory Controller 3 (rev a2) 00:00.7 RAM memory: nVidia Corporation C51 Memory Controller 2 (rev a2) 00:03.0 PCI bridge: nVidia Corporation C51 PCI Express Bridge (rev a1) 00:05.0 VGA compatible controller: nVidia Corporation C51PV [GeForce 6150] (rev a2) 00:09.0 RAM memory: nVidia Corporation MCP51 Host Bridge (rev a2) 00:0a.0 ISA bridge: nVidia Corporation MCP51 LPC Bridge (rev a3) 00:0a.1 SMBus: nVidia Corporation MCP51 SMBus (rev a3) 00:0a.2 RAM memory: nVidia Corporation MCP51 Memory Controller 0 (rev a3) 00:0b.0 USB Controller: nVidia Corporation MCP51 USB Controller (rev a3) 00:0b.1 USB Controller: nVidia Corporation MCP51 USB Controller (rev a3) 00:0d.0 IDE interface: nVidia Corporation MCP51 IDE (rev a1) 00:0e.0 IDE interface: nVidia Corporation MCP51 Serial ATA Controller (rev a1) 00:0f.0 IDE interface: nVidia Corporation MCP51 Serial ATA Controller (rev a1) 00:10.0 PCI bridge: nVidia Corporation MCP51 PCI Bridge (rev a2) 00:10.1 Audio device: nVidia Corporation MCP51 High Definition Audio (rev a2) 00:14.0 Bridge: nVidia Corporation MCP51 Ethernet Controller (rev a3) 00:18.0 Host bridge: Advanced Micro Devices [AMD] K8 [Athlon64/Opteron] HyperTransport Technology Configuration 00:18.1 Host bridge: Advanced Micro Devices [AMD] K8 [Athlon64/Opteron] Address Map 00:18.2 Host bridge: Advanced Micro Devices [AMD] K8 [Athlon64/Opteron] DRAM Controller 00:18.3 Host bridge: Advanced Micro Devices [AMD] K8 [Athlon64/Opteron] Miscellaneous Control 01:00.0 Ethernet controller: Intel Corporation 82574L Gigabit Network Connection 02:05.0 FireWire (IEEE 1394): Texas Instruments TSB43AB22/A IEEE-1394a-2000 Controller (PHY/Link) 02:08.0 Ethernet controller: Intel Corporation 82541PI Gigabit Ethernet Controller (rev 05) Memory Info: cat /proc/meminfo MemTotal: 6097292 kB MemFree: 5932588 kB Buffers: 7036 kB Cached: 60248 kB SwapCached: 0 kB Active: 60028 kB Inactive: 47764 kB Active(anon): 40980 kB Inactive(anon): 0 kB Active(file): 19048 kB Inactive(file): 47764 kB Unevictable: 0 kB Mlocked: 0 kB SwapTotal: 5855684 kB SwapFree: 5855684 kB Dirty: 0 kB Writeback: 0 kB AnonPages: 40508 kB Mapped: 18928 kB Slab: 19824 kB SReclaimable: 6780 kB SUnreclaim: 13044 kB PageTables: 3252 kB NFS_Unstable: 0 kB Bounce: 0 kB WritebackTmp: 0 kB CommitLimit: 8904328 kB Committed_AS: 93232 kB VmallocTotal: 34359738367 kB VmallocUsed: 289584 kB VmallocChunk: 34359446583 kB HugePages_Total: 0 HugePages_Free: 0 HugePages_Rsvd: 0 HugePages_Surp: 0 Hugepagesize: 2048 kB DirectMap4k: 9152 kB DirectMap2M: 6248448 kB Hardware is M2NPV-VM with 6 GB Memory. Regards Matthias Kreis PS: The system can be made available for debugging if needed.
Hi, I've also the same problem since about one year and just opened a bug here. Now with some other search patterns I've found this, so mine is a clone *sorry* I've found a patch which fixed the problem for me: see bugreport #16471 https://bugzilla.kernel.org/show_bug.cgi?id=16471 regards Patrick
patch to disable 64 bit dma on systems with PCI (only) adapters, and more than 4GB ram, committed to net-next, should already be in linux-next, and will be in 2.6.37-rc merge window. http://git.kernel.org/?p=linux/kernel/git/davem/net-next-2.6.git;a=commitdiff;h=e508be174ad36b0cf9b324cd04978c2b13c21502