I update to from gutsy to hardy. Yes, just now.
I meet same problem with degraded network perfomance.
I try to boot with livecd "Ubuntu 8.10 Intrepid" - slow network too.
After long experiments i find that boot with kernel option "acpi=off" network
work with normal speed.
I need to stay on LTS so i cannot update to intrepid or later releases. But i
believe that "acpi=off" is not normal operation mode.
Motherboard: Asus DG33BU
lsb_release -dc
Description: Ubuntu 8.04.2
Codename: hardy
uname -sr
Linux 2.6.24-24-generic
lspci -vvnn
00:19.0 Ethernet controller [0200]: Intel Corporation 82566DC-2 Gigabit Network
Connection [8086:294c] (rev 02)
Subsystem: Intel Corporation Unknown device [8086:0001]
Control: I/O+ Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr-
Stepping- SERR- FastB2B-
Status: Cap+ 66MHz- UDF- FastB2B- ParErr- DEVSEL=fast >TAbort- <TAbort-
<MAbort- >SERR- <PERR-
Latency: 0
Interrupt: pin A routed to IRQ 217
Region 0: Memory at 30380000 (32-bit, non-prefetchable) [size=128K]
Region 1: Memory at 303a4000 (32-bit, non-prefetchable) [size=4K]
Region 2: I/O ports at 2100 [size=32]
Capabilities: [c8] Power Management version 2
Flags: PMEClk- DSI+ D1- D2- AuxCurrent=0mA
PME(D0+,D1-,D2-,D3hot+,D3cold+)
Status: D0 PME-Enable- DSel=0 DScale=1 PME-
Capabilities: [d0] Message Signalled Interrupts: Mask- 64bit+ Queue=0/0
Enable+
Address: 00000000fee0100c Data: 4169
Capabilities: [e0] Vendor Specific Information
dmesg (normal)
[ 258.485605] e1000e: Intel(R) PRO/1000 Network Driver - 0.3.3.3-k2
[ 258.485610] e1000e: Copyright (c) 1999-2008 Intel Corporation.
[ 258.485990] ACPI: PCI Interrupt 0000:00:19.0[A] -> GSI 20 (level, low) ->
IRQ 17
[ 258.486006] PCI: Setting latency timer of device 0000:00:19.0 to 64
[ 258.688358] eth0: (PCI Express:2.5GB/s:Width x1) 00:19:d1:b5:9a:28
[ 258.688363] eth0: Intel(R) PRO/1000 Network Connection
[ 258.688386] eth0: MAC: 5, PHY: 6, PBA No: ffffff-0ff
[ 258.690040] udev: renamed network interface eth0 to eth2
[ 260.284363] eth2: Link is Up 100 Mbps Full Duplex, Flow Control: RX/TX
[ 260.284368] eth2: 10/100 speed: disabling TSO
dmesg (with acpi=off)
[ 171.218528] e1000e: Intel(R) PRO/1000 Network Driver - 0.3.3.3-k2
[ 171.218533] e1000e: Copyright (c) 1999-2008 Intel Corporation.
[ 171.218922] PCI: Found IRQ 9 for device 0000:00:19.0
[ 171.219153] PCI: Setting latency timer of device 0000:00:19.0 to 64
[ 171.422382] eth0: (PCI Express:2.5GB/s:Width x1) 00:19:d1:b5:9a:28
[ 171.422387] eth0: Intel(R) PRO/1000 Network Connection
[ 171.422410] eth0: MAC: 5, PHY: 6, PBA No: ffffff-0ff
[ 171.424066] udev: renamed network interface eth0 to eth2
[ 173.046223] eth2: Link is Up 100 Mbps Full Duplex, Flow Control: RX/TX
[ 173.046228] eth2: 10/100 speed: disabling TSO
--
e1000e shipped with Hardy caused sine wave pattern
https://bugs.launchpad.net/bugs/231183
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