I can confirm this bug exists on Hardy Heron AMD64. In my view, this is
a critical issue preventing me from having a quality experience on
Ubuntu. I have spent alot of time puzzling over this bug and testing out
various things. I have now exhausted all possible avenues I know how to
do myself and before creating a new bug I searched, finding this one. I
can confirm:
1. Attempting to come back from a period away from the machine results in no
internet - "sleep" bug. Importantly, Im on a workstation and in power
management I have set the machine to never sleep and only my CRT display to
sleep after 15 minutes. Nonetheless, even though my machine never sleeps it
somehow looses internet connectivity.
2. The problem is not effected by DHCP or statically allocated IPs - its
universal
3. sudo ifconfig eth0 looks right when it is queried as per below:
eth0 Link encap:Ethernet HWaddr 00:1a:92:3f:45:48
inet addr:192.168.10.2 Bcast:192.168.10.255 Mask:255.255.255.0
inet6 addr: fe80::21a:92ff:fe3f:4548/64 Scope:Link
UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
RX packets:2634 errors:0 dropped:0 overruns:0 frame:0
TX packets:2451 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:1000
RX bytes:3056584 (2.9 MB) TX bytes:264316 (258.1 KB)
Interrupt:23 Base address:0xe800
4. sudo ifconfig eth0 down then up does not fix the problem
5. Only a reboot fixes the problem
6. When the bug condition is in place, I get the following when I sudo route:
Kernel IP routing table
Destination Gateway Genmask Flags Metric Ref Use Iface
192.168.10.0 * 255.255.255.0 U 0 0 0
eth0
7. When the internet is working and I have not allowed the machine to
"sleep" even though it doesnt sleep when I sudo route I get:
Kernel IP routing table
Destination Gateway Genmask Flags Metric Ref Use Iface
192.168.10.0 * 255.255.255.0 U 0 0 0
eth0
link-local * 255.255.0.0 U 1000 0 0
eth0
default www.routerlogin 0.0.0.0 UG 100 0 0
eth0
So it seems to "loose" my NAT gateway router at 192.168.10.1.
8. When the bug condition is in place, I can ping my workstation and the
gateway router. However when I try to ping an external address such as
microsoft.com it says "connect: Network is unreachable"
9. When the bug condition is in place, if do an nslookup query on say
microsoft.com I get a proper dns answer back.
EASY BUG REPLICATION STEPS:
1. Have a freshly booted Hardy machine using ethernet
2. Confirm internet works
3. Open terminal
4. sudo ifconfig eth0 down
5. sudo ifconfig eth0 up
6. Observe bug behaviour
I have confirmed the bug report. Can I please appeal for some help on
this - lets fix it so no one else has to suffer it :)
** Changed in: acpi (Ubuntu)
Status: New => Confirmed
** Changed in: network-config (Ubuntu)
Sourcepackagename: acpi => network-config
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wired ethernet not available on resume from sleep
https://bugs.launchpad.net/bugs/111282
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