Hello, I upgraded my system, a Dell Dimension 233 MHz, from RH9 to FC1 and after the first reboot got the following kernel dump: <QUOTE> Jan 16 13:09:19 pegasus kernel: PCI: Found IRQ 9 for device 00:0e.0 Jan 16 13:09:19 pegasus kernel: 3c59x: Donald Becker and others. www.scyld.com/network/vortex.html Jan 16 13:09:19 pegasus kernel: See Documentation/networking/vortex.txt Jan 16 13:09:19 pegasus kernel: 00:0e.0: 3Com PCI 3c905 Boomerang 100baseTx at 0xfcc0. Vers LK1.1.18-ac Jan 16 13:09:19 pegasus kernel: 00:60:97:2f:fa:5f, IRQ 9 Jan 16 13:09:19 pegasus kernel: product code 4848 rev 00.0 date 11-01-96 Jan 16 13:09:19 pegasus kernel: 8K word-wide RAM 3:5 Rx:Tx split, autoselect/MII interface. Jan 16 13:09:19 pegasus kernel: MII transceiver found at address 24, status 782f. Jan 16 13:09:19 pegasus kernel: Enabling bus-master transmits and whole-frame receives. Jan 16 13:09:19 pegasus kernel: 00:0e.0: scatter/gather enabled. h/w checksums disabled Jan 16 13:09:19 pegasus kernel: eth0: Dropping NETIF_F_SG since no checksum feature. Jan 16 13:09:19 pegasus kernel: Intel(R) PRO/100 Network Driver - version 2.3.18-k1 Jan 16 13:09:19 pegasus kernel: Copyright (c) 2003 Intel Corporation Jan 16 13:09:19 pegasus kernel: Jan 16 13:09:19 pegasus kernel: PCI: Found IRQ 10 for device 00:0f.0 Jan 16 13:09:19 pegasus kernel: e100: eth1: Intel(R) PRO/100 Network Connection Jan 16 13:09:19 pegasus kernel: Jan 16 13:09:19 pegasus kernel: ip_tables: (C) 2000-2002 Netfilter core team Jan 16 13:09:19 pegasus kernel: ip_conntrack version 2.1 (1536 buckets, 12288 max) - 292 bytes per conntrack Jan 16 13:09:19 pegasus kernel: Intel(R) PRO/100 Network Driver - version 2.3.18-k1 Jan 16 13:09:19 pegasus kernel: Copyright (c) 2003 Intel Corporation Jan 16 13:09:19 pegasus kernel: Jan 16 13:09:19 pegasus kernel: PCI: Found IRQ 10 for device 00:0f.0 Jan 16 13:09:19 pegasus kernel: e100: eth0: Intel(R) PRO/100 Network Connection Jan 16 13:09:19 pegasus kernel: Jan 16 13:09:19 pegasus kernel: PCI: Found IRQ 9 for device 00:0e.0 Jan 16 13:09:19 pegasus kernel: 3c59x: Donald Becker and others. www.scyld.com/network/vortex.html Jan 16 13:09:19 pegasus kernel: See Documentation/networking/vortex.txt Jan 16 13:09:19 pegasus kernel: 00:0e.0: 3Com PCI 3c905 Boomerang 100baseTx at 0xfcc0. Vers LK1.1.18-ac Jan 16 13:09:19 pegasus kernel: 00:60:97:2f:fa:5f, IRQ 9 Jan 16 13:09:19 pegasus kernel: product code 4848 rev 00.0 date 11-01-96 Jan 16 13:09:19 pegasus kernel: 64K word-wide RAM 1:1 Rx:Tx split, autoselect/10baseT interface. Jan 16 13:09:19 pegasus kernel: Enabling bus-master transmits and whole-frame receives. Jan 16 13:09:19 pegasus kernel: 00:0e.0: scatter/gather enabled. h/w checksums disabled Jan 16 13:09:19 pegasus kernel: eth1: Dropping NETIF_F_SG since no checksum feature. Jan 16 13:09:19 pegasus kernel: eth1: Transmit error, Tx status register d0. Jan 16 13:09:19 pegasus kernel: Flags; bus-master 1, dirty 1(1) current 1(1) Jan 16 13:09:19 pegasus kernel: Transmit list 00000000 vs. cabe2240. Jan 16 13:09:19 pegasus kernel: 0: @cabe2200 length 8000002a status 8000002a Jan 16 13:09:19 pegasus kernel: 1: @cabe2240 length 00000000 status 00000000 Jan 16 13:09:19 pegasus kernel: 2: @cabe2280 length 00000000 status 00000000 Jan 16 13:09:19 pegasus kernel: 3: @cabe22c0 length 00000000 status 00000000 Jan 16 13:09:19 pegasus kernel: 4: @cabe2300 length 00000000 status 00000000 Jan 16 13:09:19 pegasus kernel: 5: @cabe2340 length 00000000 status 00000000 Jan 16 13:09:19 pegasus kernel: 6: @cabe2380 length 00000000 status 00000000 Jan 16 13:09:19 pegasus kernel: 7: @cabe23c0 length 00000000 status 00000000 Jan 16 13:09:19 pegasus kernel: 8: @cabe2400 length 00000000 status 00000000 Jan 16 13:09:19 pegasus kernel: 9: @cabe2440 length 00000000 status 00000000 Jan 16 13:09:19 pegasus kernel: 10: @cabe2480 length 00000000 status 00000000 Jan 16 13:09:19 pegasus kernel: 11: @cabe24c0 length 00000000 status 00000000 Jan 16 13:09:19 pegasus kernel: 12: @cabe2500 length 00000000 status 00000000 Jan 16 13:09:19 pegasus kernel: 13: @cabe2540 length 00000000 status 00000000 Jan 16 13:09:19 pegasus kernel: 14: @cabe2580 length 00000000 status 00000000 Jan 16 13:09:19 pegasus kernel: 15: @cabe25c0 length 00000000 status 00000000 </QUOTE Never had that with RH9 and before. This dump of the transmit error repeats itself every few seconds. I tried several different combinations of LAN cards with 3Com, Intel and realtec for eth0 and eth1 also on different PCI slots everytime. 3Com/3Com gives this failure as wel 3Com/Intel Pro. Only the combo 3Com/RealTec did not cause this and now runs fine. Why can't i use 2 3Com cards anymore or a 3Com card with a Intel Pro 100 card??????? What causes these messages? Faulty drivers maybe? This was immediatelly after the upgrade from CDROM but before running up2date on the new Fedora server. Thanks, -- Jan