I've experienced the same problem with openSUSE 12.1 and KDE or xfce. I've found a clumsy workaround, that might also help here:
When the system should be suspended, the NetworkManager gets notified by a dbus call. You can generate this call manually by qdbus --system org.freedesktop.NetworkManager /org/freedesktop/NetworkManager org.freedesktop.NetworkManager.Sleep boolean:true This results, that NetworkManager shuts down all its network interfaces. To wake him up again, following call can be used: qdbus --system org.freedesktop.NetworkManager /org/freedesktop/NetworkManager org.freedesktop.NetworkManager.Sleep boolean:false At SUSE, this call is performed by /usr/lib/pm-utils/sleep.d/55NetworkManager and can be overwritten by /etc/pm/sleep.d/55NetworkManager Disabling this call, results into a working suspend mechanism for KDE and a NFS Home directory. However, xfce additional calls org.freedesktop.NetworkManager.Sleep boolean:true directly. However, modifying this file to always wake-up NetworkManager results into a working (but clumsy solution), because, xfce calls NetworkManager sleep NetworkManager shuts down all network interfaces [...] modified /etc/pm/sleep.d/55NetworkManager wakes up NetworkManager again Network connections are reestablished again [...] system is going into suspend. I don't have a Ubuntu at hand, but I expect, that this workaround can be adapted for Ubuntu and Gnome. -- You received this bug notification because you are a member of Desktop Packages, which is subscribed to network-manager in Ubuntu. https://bugs.launchpad.net/bugs/516592 Title: Network manager kills NFS link on going to sleep hanging Gnome etc. Status in NetworkManager: New Status in “network-manager” package in Ubuntu: Confirmed Bug description: Binary package hint: network-manager When the system is going to sleep Network Manager unloads the network interface even though the home directory is NFS loaded on that interface. Obviously there is still more work happening on that directory and so the system hangs on I/O in the case where NFS is mounted with the hard option. This prevents power saving and the system is unusable as Network Manager dies with the rest of Gnome all waiting for I/O If you log in on one of the TTYs shutting the system down cleanly fails on the kernel hung I/O and so the only way out is to press the reset button. here is the syslog output showing network manager stopping the nic just before the kernel says ouch I have no file system to talk to: Feb 2 21:33:53 desktop kernel: [19339.921076] CPU0 attaching NULL sched-domain. Feb 2 21:33:53 desktop kernel: [19339.921090] CPU1 attaching NULL sched-domain. Feb 2 21:33:53 desktop kernel: [19339.961405] CPU0 attaching sched-domain: Feb 2 21:33:53 desktop kernel: [19339.961414] domain 0: span 0-1 level SIBLING Feb 2 21:33:53 desktop kernel: [19339.961421] groups: 0 1 Feb 2 21:33:53 desktop kernel: [19339.961434] CPU1 attaching sched-domain: Feb 2 21:33:53 desktop kernel: [19339.961439] domain 0: span 0-1 level SIBLING Feb 2 21:33:53 desktop kernel: [19339.961445] groups: 1 0 Feb 2 21:33:53 desktop anacron[2176]: Normal exit (0 jobs run) Feb 2 21:33:54 desktop NetworkManager: <info> Sleeping... Feb 2 21:33:54 desktop NetworkManager: <info> (eth0): now unmanaged Feb 2 21:33:54 desktop NetworkManager: <info> (eth0): device state change: 8 -> 1 (reason 37) Feb 2 21:33:54 desktop NetworkManager: <info> (eth0): deactivating device (reason: 37). Feb 2 21:33:54 desktop NetworkManager: <info> (eth0): canceled DHCP transaction, dhcp client pid 839 Feb 2 21:33:54 desktop NetworkManager: <WARN> check_one_route(): (eth0) error -34 returned from rtnl_route_del(): Sucess#012 Feb 2 21:33:54 desktop NetworkManager: <info> (eth0): cleaning up... Feb 2 21:33:54 desktop NetworkManager: <info> (eth0): taking down device. Feb 2 21:33:54 desktop NetworkManager: <info> (wlan0): now unmanaged Feb 2 21:33:54 desktop NetworkManager: <info> (wlan0): device state change: 3 -> 1 (reason 37) Feb 2 21:33:54 desktop NetworkManager: <info> (wlan0): cleaning up... Feb 2 21:33:54 desktop NetworkManager: <info> (wlan0): taking down device. Feb 2 21:33:55 desktop NetworkManager: <info> (eth0): carrier now OFF (device state 1) Feb 2 21:36:55 desktop kernel: [19521.570035] nfs: server nfs.office.local not responding, still trying Feb 2 21:36:56 desktop kernel: [19522.710031] nfs: server nfs.office.local not responding, still trying Feb 2 21:37:03 desktop kernel: [19529.660034] nfs: server nfs.office.local not responding, still trying Feb 2 21:37:17 desktop kernel: [19543.690033] nfs: server nfs.office.local not responding, still trying Feb 2 21:37:26 desktop kernel: [19552.670037] nfs: server nfs.office.local not responding, still trying Feb 2 21:37:27 desktop kernel: [19553.670029] nfs: server nfs.office.local not responding, still trying Feb 2 21:37:29 desktop kernel: [19555.660034] nfs: server nfs.office.local not responding, still trying Feb 2 21:37:33 desktop kernel: [19559.470051] nfs: server nfs.office.local not responding, still trying Feb 2 21:37:34 desktop kernel: [19560.950099] INFO: task sync:2239 blocked for more than 120 seconds. Feb 2 21:37:34 desktop kernel: [19560.950184] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. Feb 2 21:37:34 desktop kernel: [19560.950267] sync D 00000000ffffffff 0 2239 2104 0x00000000 Feb 2 21:37:34 desktop kernel: [19560.950279] ffff8800228d1c58 0000000000000086 ffff880001a23880 0000000000015880 Feb 2 21:37:34 desktop kernel: [19560.950290] ffff880010115e70 0000000000015880 0000000000015880 0000000000015880 Feb 2 21:37:34 desktop kernel: [19560.950299] 0000000000015880 ffff880010115e70 0000000000015880 0000000000015880 Feb 2 21:37:34 desktop kernel: [19560.950309] Call Trace: Feb 2 21:37:34 desktop kernel: [19560.950328] [<ffffffff810da7f0>] ? sync_page+0x0/0x50 Feb 2 21:37:34 desktop kernel: [19560.950338] [<ffffffff81527c98>] io_schedule+0x28/0x40 Feb 2 21:37:34 desktop kernel: [19560.950346] [<ffffffff810da82d>] sync_page+0x3d/0x50 Feb 2 21:37:34 desktop kernel: [19560.950354] [<ffffffff815283c7>] __wait_on_bit+0x57/0x80 Feb 2 21:37:34 desktop kernel: [19560.950363] [<ffffffff810da99e>] wait_on_page_bit+0x6e/0x80 Feb 2 21:37:34 desktop kernel: [19560.950373] [<ffffffff81078b60>] ? wake_bit_function+0x0/0x40 Feb 2 21:37:34 desktop kernel: [19560.950383] [<ffffffff810e4d20>] ? pagevec_lookup_tag+0x20/0x30 Feb 2 21:37:34 desktop kernel: [19560.950391] [<ffffffff810dae45>] wait_on_page_writeback_range+0xf5/0x190 Feb 2 21:37:34 desktop kernel: [19560.950401] [<ffffffff810e4d20>] ? pagevec_lookup_tag+0x20/0x30 Feb 2 21:37:34 desktop kernel: [19560.950411] [<ffffffff81012bae>] ? apic_timer_interrupt+0xe/0x20 Feb 2 21:37:34 desktop kernel: [19560.950421] [<ffffffff811357a6>] ? generic_forget_inode+0x1b6/0x240 Feb 2 21:37:34 desktop kernel: [19560.950429] [<ffffffff810daf07>] filemap_fdatawait+0x27/0x30 Feb 2 21:37:34 desktop kernel: [19560.950439] [<ffffffff8113fb56>] generic_sync_sb_inodes+0x366/0x530 Feb 2 21:37:34 desktop kernel: [19560.950449] [<ffffffff8116f896>] ? vfs_quota_sync+0x186/0x200 Feb 2 21:37:34 desktop kernel: [19560.950457] [<ffffffff810e39f8>] ? do_writepages+0x28/0x50 Feb 2 21:37:34 desktop kernel: [19560.950466] [<ffffffff8113fdbe>] sync_inodes_sb+0x9e/0xb0 Feb 2 21:37:34 desktop kernel: [19560.950475] [<ffffffff81143b90>] __sync_filesystem+0x30/0x70 Feb 2 21:37:34 desktop kernel: [19560.950483] [<ffffffff81143c97>] sync_filesystems+0xc7/0x120 Feb 2 21:37:34 desktop kernel: [19560.950492] [<ffffffff81143d4c>] sys_sync+0x1c/0x40 Feb 2 21:37:34 desktop kernel: [19560.950500] [<ffffffff81012002>] system_call_fastpath+0x16/0x1b ProblemType: Bug Architecture: amd64 CRDA: Error: [Errno 2] No such file or directory Date: Wed Feb 3 15:23:26 2010 DistroRelease: Ubuntu 9.10 Gconf: IfupdownConfig: auto lo iface lo inet loopback IpRoute: 10.10.10.0/24 dev eth0 proto kernel scope link src 10.10.10.124 metric 1 169.254.0.0/16 dev eth0 scope link metric 1000 default via 10.10.10.2 dev eth0 proto static NonfreeKernelModules: nvidia Package: network-manager 0.8~a~git.20091013t193206.679d548-0ubuntu1 ProcEnviron: LANG=en_GB.UTF-8 SHELL=/bin/bash ProcVersionSignature: Ubuntu 2.6.31-17.54-generic SourcePackage: network-manager Uname: Linux 2.6.31-17-generic x86_64 WpaSupplicantLog: To manage notifications about this bug go to: https://bugs.launchpad.net/network-manager/+bug/516592/+subscriptions -- Mailing list: https://launchpad.net/~desktop-packages Post to : desktop-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~desktop-packages More help : https://help.launchpad.net/ListHelp
