I observed the desktop suspend will bring down network interfaces(/usr/lib/pm-utils/sleep.d/55NetworkManager), so I bring down ethernet manually with: ifconfig eth4 down, then did pm-suspend. The resuming is ok.(unplug the ethernet cable also does the trick)
By checking pm-suspend.log.desktop and pm-suspend.log.vt, there's slightly difference. --- pm-suspend.log.vt /usr/lib/pm-utils/sleep.d/55NetworkManager suspend suspend: success. Running hook /usr/lib/pm-utils/sleep.d/60_wpa_supplicant suspend suspend: Selected interface 'wlan3' OK --- pm-suspend.log.desktop /usr/lib/pm-utils/sleep.d/55NetworkManager suspend suspend: success. Running hook /usr/lib/pm-utils/sleep.d/60_wpa_supplicant suspend suspend: Failed to connect to wpa_supplicant - wpa_ctrl_open: No such file or directory ----------------- No matter run pm-suspend manually or run from desktop, pm-suspend is called, but I think there's still some difference which may make the system wake up unsuccessfully. ---------------- Tested Natty full installation, both desktop and running pm-suspend directly are ok. --- The ethernet controller information. 03:00.0 Ethernet controller [0200]: JMicron Technology Corp. JMC250 PCI Express Gigabit Ethernet Controller [197b:0250] (rev 03) Subsystem: ASUSTeK Computer Inc. Device [1043:8429] Flags: bus master, fast devsel, latency 0, IRQ 46 Memory at fbffc000 (32-bit, non-prefetchable) [size=16K] I/O ports at ec00 [size=128] I/O ports at e800 [size=256] Capabilities: [68] Power Management version 3 Capabilities: [50] Express Legacy Endpoint, MSI 00 Capabilities: [40] MSI-X: Enable- Count=8 Masked- Capabilities: [70] MSI: Enable+ Count=1/8 Maskable+ 64bit+ Kernel driver in use: jme Kernel modules: jme -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/907188 Title: Asus EB1007 can't wake up from suspend when suspended using pm-suspend To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/907188/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs