So I have been doing more research and I think Im narrowing it down now.
In summary I think:
After a period of no network use, ACPI thinks IRQ 23 isnt needed
ACPI turns off IRQ 23
eth0 times out and wont come back without reboot
ifdown/ifup wont fix it
Jun 21 03:04:07 ppp kernel: [ 57.447218] eth0: no IPv6 routers present
Jun 21 04:29:46 ppp kernel: [ 5193.747505] irq 23: nobody cared (try booting
with the "irqpoll" option)
Jun 21 04:29:46 ppp kernel: [ 5193.747514] Pid: 0, comm: swapper Tainted: P
2.6.24-19-generic #1
Jun 21 04:29:46 ppp kernel: [ 5193.747516]
Jun 21 04:29:46 ppp kernel: [ 5193.747517] Call Trace:
Jun 21 04:29:46 ppp kernel: [ 5193.747519] <IRQ> [__report_bad_irq+0x1e/0x80]
__report_bad_irq+0x1e/0x80
Jun 21 04:29:46 ppp kernel: [ 5193.747550] [note_interrupt+0x2ad/0x2e0]
note_interrupt+0x2ad/0x2e0
Jun 21 04:29:46 ppp kernel: [ 5193.747562] [handle_fasteoi_irq+0xa1/0x110]
handle_fasteoi_irq+0xa1/0x110
Jun 21 04:29:46 ppp kernel: [ 5193.747571] [do_IRQ+0x7b/0x100]
do_IRQ+0x7b/0x100
Jun 21 04:29:46 ppp kernel: [ 5193.747577] [ret_from_intr+0x0/0x0a]
ret_from_intr+0x0/0xa
Jun 21 04:29:46 ppp kernel: [ 5193.747583] [pci_conf1_read+0x0/0x100]
pci_conf1_read+0x0/0x100
Jun 21 04:29:46 ppp kernel: [ 5193.747596] [__do_softirq+0x60/0xe0]
__do_softirq+0x60/0xe0
Jun 21 04:29:46 ppp kernel: [ 5193.747609] [call_softirq+0x1c/0x30]
call_softirq+0x1c/0x30
Jun 21 04:29:46 ppp kernel: [ 5193.747614] [do_softirq+0x35/0x90]
do_softirq+0x35/0x90
Jun 21 04:29:46 ppp kernel: [ 5193.747618] [irq_exit+0x88/0x90]
irq_exit+0x88/0x90
Jun 21 04:29:46 ppp kernel: [ 5193.747621] [do_IRQ+0x80/0x100]
do_IRQ+0x80/0x100
Jun 21 04:29:46 ppp kernel: [ 5193.747624] [default_idle+0x0/0x40]
default_idle+0x0/0x40
Jun 21 04:29:46 ppp kernel: [ 5193.747628] [default_idle+0x0/0x40]
default_idle+0x0/0x40
Jun 21 04:29:46 ppp kernel: [ 5193.747630] [ret_from_intr+0x0/0x0a]
ret_from_intr+0x0/0xa
Jun 21 04:29:46 ppp kernel: [ 5193.747633] <EOI> [lapic_next_event+0x0/0x10]
lapic_next_event+0x0/0x10
Jun 21 04:29:46 ppp kernel: [ 5193.747648] [default_idle+0x29/0x40]
default_idle+0x29/0x40
Jun 21 04:29:46 ppp kernel: [ 5193.747654] [cpu_idle+0x6f/0xc0]
cpu_idle+0x6f/0xc0
Jun 21 04:29:46 ppp kernel: [ 5193.747662] [start_kernel+0x2c5/0x350]
start_kernel+0x2c5/0x350
Jun 21 04:29:46 ppp kernel: [ 5193.747670] [x86_64_start_kernel+0x12e/0x140]
_sinittext+0x12e/0x140
Jun 21 04:29:46 ppp kernel: [ 5193.747678]
Jun 21 04:29:46 ppp kernel: [ 5193.747679] handlers:
Jun 21 04:29:46 ppp kernel: [ 5193.747680] [usbcore:usb_hcd_irq+0x0/0x60]
(usb_hcd_irq+0x0/0x60 [usbcore])
Jun 21 04:29:46 ppp kernel: [ 5193.747702]
[via_rhine:rhine_interrupt+0x0/0x7f0] (rhine_interrupt+0x0/0x7f0 [via_rhine])
Jun 21 04:29:46 ppp kernel: [ 5193.747710] Disabling IRQ #23
Jun 21 04:34:46 ppp kernel: [ 5493.104588] NETDEV WATCHDOG: eth0: transmit
timed out
Jun 21 04:34:46 ppp kernel: [ 5493.104738] eth0: Transmit timed out, status
0003, PHY status 786d, resetting...
Jun 21 04:34:46 ppp kernel: [ 5493.105384] eth0: link up, 100Mbps, full-duplex,
lpa 0x45E1
Jun 21 05:05:02 ppp kernel: [ 7308.203455] NETDEV WATCHDOG: eth0: transmit
timed out
Jun 21 05:05:02 ppp kernel: [ 7308.203606] eth0: Transmit timed out, status
1003, PHY status 786d, resetting...
Jun 21 05:05:02 ppp kernel: [ 7308.204254] eth0: link up, 100Mbps, full-duplex,
lpa 0x45E1
Jun 21 05:35:16 ppp kernel: [ 9121.303308] NETDEV WATCHDOG: eth0: transmit
timed out
Jun 21 05:35:16 ppp kernel: [ 9121.303457] eth0: Transmit timed out, status
1003, PHY status 786d, resetting...
Jun 21 05:35:16 ppp kernel: [ 9121.304106] eth0: link up, 100Mbps, full-duplex,
lpa 0x45E1
Jun 21 06:05:32 ppp kernel: [10936.402170] NETDEV WATCHDOG: eth0: transmit
timed out
Jun 21 06:05:32 ppp kernel: [10936.402319] eth0: Transmit timed out, status
0003, PHY status 786d, resetting...
Jun 21 06:05:32 ppp kernel: [10936.402968] eth0: link up, 100Mbps, full-duplex,
lpa 0x45E1
Jun 21 06:12:40 ppp kernel: [11364.189787] NETDEV WATCHDOG: eth0: transmit
timed out
Jun 21 06:12:40 ppp kernel: [11364.189937] eth0: Transmit timed out, status
0003, PHY status 786d, resetting...
Jun 21 06:12:40 ppp kernel: [11364.190589] eth0: link up, 100Mbps, full-duplex,
lpa 0x45E1
Jun 21 06:36:06 ppp kernel: [12769.492097] NETDEV WATCHDOG: eth0: transmit
timed out
Jun 21 06:36:06 ppp kernel: [12769.492247] eth0: Transmit timed out, status
0003, PHY status 786d, resetting...
Jun 21 06:36:06 ppp kernel: [12769.492892] eth0: link up, 100Mbps, full-duplex,
lpa 0x45E1
Jun 21 07:06:22 ppp kernel: [14584.590959] NETDEV WATCHDOG: eth0: transmit
timed out
Jun 21 07:06:22 ppp kernel: [14584.591109] eth0: Transmit timed out, status
0003, PHY status 786d, resetting...
Jun 21 07:06:22 ppp kernel: [14584.591757] eth0: link up, 100Mbps, full-duplex,
lpa 0x45E1
Jun 21 07:36:36 ppp kernel: [16397.690817] NETDEV WATCHDOG: eth0: transmit
timed out
Jun 21 07:36:36 ppp kernel: [16397.690967] eth0: Transmit timed out, status
0003, PHY status 786d, resetting...
Jun 21 07:36:36 ppp kernel: [16397.691615] eth0: link up, 100Mbps, full-duplex,
lpa 0x45E1
Jun 21 08:06:54 ppp kernel: [18214.788695] NETDEV WATCHDOG: eth0: transmit
timed out
Jun 21 08:06:54 ppp kernel: [18214.788846] eth0: Transmit timed out, status
0003, PHY status 786d, resetting...
Jun 21 08:06:54 ppp kernel: [18214.789492] eth0: link up, 100Mbps, full-duplex,
lpa 0x45E1
** Changed in: acpi (Ubuntu)
Status: New => Confirmed
--
wired ethernet not available on resume from sleep
https://bugs.launchpad.net/bugs/111282
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