Dear Christopher, Many thanks for your email looking into this problem. I As per your recommendation, I've now updated to the latest BIOS from intel and to Ubuntu 13.10 but the problem remains unchanged. The output of running 'sudo dmidecode -s bios-version && sudo dmidecode -s bios-release-date' is JGIBX10J.86A.0663.2011.1019.0408 10/19/2011 The problem is that when the Cinergy Terratec T2 is plugged in and working, then the machine does not suspend properly. It does suspend 'partially', but there is a blue power light which normally switches off if the machine successfully suspend but which stays on when the Cinergy device is plugged in and working and thereafter the machine is unusable - it won't wake back up and the only thing to do at that stage is to reboot the machine. So far I've tested this with an upstream kernel and now with the updated BIOS. I haven't tested it with the updated BIOS and the upstream kernel - pls let me know if you think that is necessary. I should add that there doesn't seem to be a problem on Arch Linux - suspend and resume seems to work fine there. All best wishes, Geoffrey PS I include the output of pm-suspend.log after an unsuccessful suspend Initial commandline parameters: Sun Nov 3 15:21:52 GMT 2013: Running hooks for suspend. Running hook /usr/lib/pm-utils/sleep.d/000kernel-change suspend suspend: /usr/lib/pm-utils/sleep.d/000kernel-change suspend suspend: success. Running hook /usr/lib/pm-utils/sleep.d/000record-status suspend suspend: /usr/lib/pm-utils/sleep.d/000record-status suspend suspend: success. Running hook /usr/lib/pm-utils/sleep.d/00logging suspend suspend: Linux blackpearl 3.11.0-12-generic #19-Ubuntu SMP Wed Oct 9 16:20:46 UTC 2013 x86_64 x86_64 x86_64 GNU/Linux Module Size Used by parport_pc 32701 0 ppdev 17671 0 rfcomm 69070 18 bnep 19564 2 arc4 12608 2 intel_powerclamp 14705 0 coretemp 13435 0 kvm_intel 138538 0 kvm 431315 1 kvm_intel crct10dif_pclmul 14289 0 crc32_pclmul 13113 0 ghash_clmulni_intel 13259 0 aesni_intel 55624 1 aes_x86_64 17131 1 aesni_intel lrw 13257 1 aesni_intel gf128mul 14951 1 lrw glue_helper 13990 1 aesni_intel ablk_helper 13597 1 aesni_intel cryptd 20329 3 ghash_clmulni_intel,aesni_intel,ablk_helper gpio_ich 13476 0 rt2800usb 27005 0 rt2x00usb 20713 1 rt2800usb rt2800lib 79963 1 rt2800usb rt2x00lib 55238 3 rt2x00usb,rt2800lib,rt2800usb mac80211 596969 3 rt2x00lib,rt2x00usb,rt2800lib cfg80211 479757 2 mac80211,rt2x00lib crc_ccitt 12707 1 rt2800lib dvb_usb_cinergyT2 17978 33 dvb_usb 24215 1 dvb_usb_cinergyT2 dvb_core 117436 1 dvb_usb btusb 28267 0 bluetooth 371874 22 bnep,btusb,rfcomm rc_core 27718 1 dvb_usb snd_hda_codec_hdmi 41276 1 snd_hda_codec_realtek 51465 1 snd_hda_intel 48171 3 microcode 23518 0 snd_hda_codec 188738 3 snd_hda_codec_realtek,snd_hda_codec_hdmi,snd_hda_intel snd_hwdep 13602 1 snd_hda_codec snd_pcm 102033 3 snd_hda_codec_hdmi,snd_hda_codec,snd_hda_intel psmouse 97626 0 snd_page_alloc 18710 2 snd_pcm,snd_hda_intel serio_raw 13413 0 snd_seq_midi 13324 0 snd_seq_midi_event 14899 1 snd_seq_midi snd_rawmidi 30095 1 snd_seq_midi snd_seq 61560 2 snd_seq_midi_event,snd_seq_midi snd_seq_device 14497 3 snd_seq,snd_rawmidi,snd_seq_midi snd_timer 29433 2 snd_pcm,snd_seq lpc_ich 21080 0 mei_me 18421 0 snd 69141 17 snd_hda_codec_realtek,snd_hwdep,snd_timer,snd_hda_codec_hdmi,snd_pcm,snd_seq,snd_rawmidi,snd_hda_codec,snd_hda_intel,snd_seq_device,snd_seq_midi mei 77692 1 mei_me i915 655752 5 soundcore 12680 1 snd video 19318 1 i915 drm_kms_helper 52651 1 i915 drm 296739 6 i915,drm_kms_helper i2c_algo_bit 13413 1 i915 mac_hid 13205 0 lp 17759 0 parport 42299 3 lp,ppdev,parport_pc usb_storage 62062 0 hid_generic 12548 0 usbhid 53014 0 hid 101512 2 hid_generic,usbhid e1000e 250025 0 ptp 18580 1 e1000e pps_core 19027 1 ptp total used free shared buffers cached Mem: 3843964 1251860 2592104 0 76312 566640 -/+ buffers/cache: 608908 3235056 Swap: 7812988 0 7812988 /usr/lib/pm-utils/sleep.d/00logging suspend suspend: success. Running hook /usr/lib/pm-utils/sleep.d/00powersave suspend suspend: /usr/lib/pm-utils/sleep.d/00powersave suspend suspend: success. Running hook /etc/pm/sleep.d/10_grub-common suspend suspend: /etc/pm/sleep.d/10_grub-common suspend suspend: success. Running hook /etc/pm/sleep.d/10_unattended-upgrades-hibernate suspend suspend: /etc/pm/sleep.d/10_unattended-upgrades-hibernate suspend suspend: success. Running hook /usr/lib/pm-utils/sleep.d/50unload_alx suspend suspend: /usr/lib/pm-utils/sleep.d/50unload_alx suspend suspend: success. Running hook /usr/lib/pm-utils/sleep.d/60_wpa_supplicant suspend suspend: Selected interface 'wlan0' OK /usr/lib/pm-utils/sleep.d/60_wpa_supplicant suspend suspend: success. Running hook /usr/lib/pm-utils/sleep.d/75modules suspend suspend: /usr/lib/pm-utils/sleep.d/75modules suspend suspend: not applicable. Running hook /usr/lib/pm-utils/sleep.d/90clock suspend suspend: /usr/lib/pm-utils/sleep.d/90clock suspend suspend: not applicable. Running hook /usr/lib/pm-utils/sleep.d/94cpufreq suspend suspend: /usr/lib/pm-utils/sleep.d/94cpufreq suspend suspend: success. Running hook /usr/lib/pm-utils/sleep.d/95anacron suspend suspend: stop: Unknown instance: /usr/lib/pm-utils/sleep.d/95anacron suspend suspend: success. Running hook /usr/lib/pm-utils/sleep.d/95hdparm-apm suspend suspend: /usr/lib/pm-utils/sleep.d/95hdparm-apm suspend suspend: not applicable. Running hook /usr/lib/pm-utils/sleep.d/95led suspend suspend: /usr/lib/pm-utils/sleep.d/95led suspend suspend: not applicable. Running hook /usr/lib/pm-utils/sleep.d/98video-quirk-db-handler suspend suspend: Kernel modesetting video driver detected, not using quirks. /usr/lib/pm-utils/sleep.d/98video-quirk-db-handler suspend suspend: success. Running hook /usr/lib/pm-utils/sleep.d/99video suspend suspend: kernel.acpi_video_flags = 0 /usr/lib/pm-utils/sleep.d/99video suspend suspend: success. Running hook /etc/pm/sleep.d/novatel_3g_suspend suspend suspend: /etc/pm/sleep.d/novatel_3g_suspend suspend suspend: success. Sun Nov 3 15:21:53 GMT 2013: performing suspend On 3 November 2013 10:29, Christopher M. Penalver <