Resuming from suspend does not work on Gentoo ruing on Dell Inspiron 1018

I am ruing

$ uname -a
Linux inspiron 4.1.15-gentoo-r1 #2 SMP Thu Feb 11 08:49:44 MSK 2016 x86_64 Intel(R) Atom(TM) CPU N455 @ 1.66GHz GenuineIntel GNU/Linux

I have installed

$ eix upower -I
[I] sys-power/upower-pm-utils
     Available versions:  0.9.23-r2 {+introspection ios KERNEL="FreeBSD linux"}
     Installed versions:  0.9.23-r2(22:45:14 25/02/2016)(introspection -ios KERNEL="linux -FreeBSD")
     Homepage:            http://upower.freedesktop.org/
     Description:         The upstream upower 0.9 git branch for use with sys-power/pm-utils

When I request the system to suspend, it works: the HDD stops making noise, the screen tus off and the power indicator starts slowly fading in and out, just like it did on Windows. However, when I try to resume, the screen doesn't tu back on. The HDD does fire up again and the power indicator reverts to being constantly on.

In order to debug this, I copied over a version of /var/log before the suspend, then I suspended, attempted a resume, and when it failed I shut down the machine by holding the power button for 5 seconds. Then I booted into a live system from a USB stick and copied over an updated /var/log. Here is the diff between the two versions:

diff log1/messages log2/messages
10354a10355,10380
> Feb 28 11:39:06 inspiron keel: wlp7s0: deauthenticating from ec:43:f6:04:63:00 by local choice (Reason: 3=DEAUTH_LEAVING)
> Feb 28 11:39:06 inspiron NetworkManager[1960]: <info>  sleep requested (sleeping: no  enabled: yes)
> Feb 28 11:39:06 inspiron NetworkManager[1960]: <info>  sleeping...
> Feb 28 11:39:06 inspiron NetworkManager[1960]: <info>  (wlp7s0): device state change: activated -> unmanaged (reason 'sleeping') [100 10 37]
> Feb 28 11:39:06 inspiron NetworkManager[1960]: <info>  (wlp7s0): canceled DHCP transaction, DHCP client pid 2025
> Feb 28 11:39:06 inspiron NetworkManager[1960]: <info>  (wlp7s0): DHCPv4 state changed bound -> done
> Feb 28 11:39:06 inspiron NetworkManager[1960]: <info>  NetworkManager state is now ASLEEP
> Feb 28 11:39:06 inspiron keel: rtl8192ce:rtl92ce_get_hw_reg():<0-0> switch case not processed
> Feb 28 11:39:06 inspiron keel: rtl8192c_common:rtl92c_firmware_selfreset(): 8051 reset fail.
> Feb 28 11:39:06 inspiron keel: cfg80211: Calling CRDA to update world regulatory domain
> Feb 28 11:39:06 inspiron keel: cfg80211: World regulatory domain updated:
> Feb 28 11:39:06 inspiron keel: cfg80211:  DFS Master region: unset
> Feb 28 11:39:06 inspiron keel: cfg80211:   (start_freq - end_freq @ bandwidth), (max_antea_gain, max_eirp), (dfs_cac_time)
> Feb 28 11:39:06 inspiron keel: cfg80211:   (2402000 KHz - 2472000 KHz @ 40000 KHz), (N/A, 2000 mBm), (N/A)
> Feb 28 11:39:06 inspiron keel: cfg80211:   (2457000 KHz - 2482000 KHz @ 20000 KHz, 92000 KHz AUTO), (N/A, 2000 mBm), (N/A)
> Feb 28 11:39:06 inspiron keel: cfg80211:   (2474000 KHz - 2494000 KHz @ 20000 KHz), (N/A, 2000 mBm), (N/A)
> Feb 28 11:39:06 inspiron keel: cfg80211:   (5170000 KHz - 5250000 KHz @ 80000 KHz, 160000 KHz AUTO), (N/A, 2000 mBm), (N/A)
> Feb 28 11:39:06 inspiron keel: cfg80211:   (5250000 KHz - 5330000 KHz @ 80000 KHz, 160000 KHz AUTO), (N/A, 2000 mBm), (0 s)
> Feb 28 11:39:06 inspiron keel: cfg80211:   (5490000 KHz - 5730000 KHz @ 160000 KHz), (N/A, 2000 mBm), (0 s)
> Feb 28 11:39:06 inspiron keel: cfg80211:   (5735000 KHz - 5835000 KHz @ 80000 KHz), (N/A, 2000 mBm), (N/A)
> Feb 28 11:39:06 inspiron keel: cfg80211:   (57240000 KHz - 63720000 KHz @ 2160000 KHz), (N/A, 0 mBm), (N/A)
> Feb 28 11:39:06 inspiron NetworkManager[1960]: <wa>  Failed to GDBus.Error:fi.w1.wpa_supplicant1.NotCoected: This interface is not coected: discoect.
> Feb 28 11:39:06 inspiron dbus[1936]: [system] Activating service name='org.freedesktop.nm_dispatcher' (using servicehelper)
> Feb 28 11:39:06 inspiron dbus[1936]: [system] Successfully activated service 'org.freedesktop.nm_dispatcher'
> Feb 28 11:39:06 inspiron nm-dispatcher[2740]: Dispatching action 'down' for wlp7s0
diff log1/pm-powersave.log log2/pm-powersave.log
703a704,746
> Ruing hook /usr/lib64/pm-utils/power.d/disable_wol false:
> /usr/lib64/pm-utils/power.d/disable_wol false: not applicable.
> 
> Ruing hook /usr/lib64/pm-utils/power.d/intel-audio-powersave false:
> Setting power savings for snd_hda_intel to 0...Done.
> /usr/lib64/pm-utils/power.d/intel-audio-powersave false: success.
> 
> Ruing hook /usr/lib64/pm-utils/power.d/laptop-mode false:
> Laptop mode disabled.
> /usr/lib64/pm-utils/power.d/laptop-mode false: success.
> 
> Ruing hook /usr/lib64/pm-utils/power.d/pci_devices false:
> Setting Host Bridge 0000:00:00.0 to on
> Setting Audio device 0000:00:1b.0 to on
> Setting Etheet device 0000:05:00.0 to on
> Setting Wireless device 0000:07:00.0 to on
> /usr/lib64/pm-utils/power.d/pci_devices false: success.
> 
> Ruing hook /usr/lib64/pm-utils/power.d/pcie_aspm false:
> /usr/lib64/pm-utils/power.d/pcie_aspm: line 9: echo: write error: Operation not permitted
> /usr/lib64/pm-utils/power.d/pcie_aspm false: success.
> 
> Ruing hook /usr/lib64/pm-utils/power.d/sata_alpm false:
> Setting SATA ALPM on host0 to max_performance...Done.
> Setting SATA ALPM on host1 to max_performance...Done.
> Setting SATA ALPM on host2 to max_performance...Done.
> Setting SATA ALPM on host3 to max_performance...Done.
> /usr/lib64/pm-utils/power.d/sata_alpm false: success.
> 
> Ruing hook /usr/lib64/pm-utils/power.d/sched-powersave false:
> **sched policy powersave OFF
> /usr/lib64/pm-utils/power.d/sched-powersave false: success.
> 
> Ruing hook /usr/lib64/pm-utils/power.d/usb_bluetooth false:
> /usr/lib64/pm-utils/power.d/usb_bluetooth false: success.
> 
> Ruing hook /usr/lib64/pm-utils/power.d/wireless false:
> Tuing powersave for wlp7s0 off...Done.
> /usr/lib64/pm-utils/power.d/wireless false: success.
> 
> Ruing hook /usr/lib64/pm-utils/power.d/xfs_buffer false:
> /usr/lib64/pm-utils/power.d/xfs_buffer false: not applicable.
> 
diff log1/pm-suspend.log log2/pm-suspend.log
295a296,354
> Initial commandline parameters: 
> Blacklisting 01grub.
> Blacklisting 90clock.
> Sun Feb 28 11:39:06 MSK 2016: Ruing hooks for suspend.
> Ruing hook /usr/lib64/pm-utils/sleep.d/00logging suspend suspend:
> Linux inspiron 4.1.15-gentoo-r1 #2 SMP Thu Feb 11 08:49:44 MSK 2016 x86_64 Intel(R) Atom(TM) CPU N455 @ 1.66GHz GenuineIntel GNU/Linux
> Module                  Size  Used by
> snd_hda_codec_realtek    58416  1
> snd_hda_codec_generic    53967  1 snd_hda_codec_realtek
> rtl8192ce              71279  0
> snd_hda_intel          18165  2
> snd_hda_controller     15635  1 snd_hda_intel
> snd_hda_codec          70339  4 snd_hda_codec_realtek,snd_hda_codec_generic,snd_hda_intel,snd_hda_controller
> snd_hwdep               5794  1 snd_hda_codec
> rtl_pci                29756  1 rtl8192ce
> snd_hda_core           16463  4 snd_hda_codec_realtek,snd_hda_codec_generic,snd_hda_codec,snd_hda_controller
> snd_pcm                79924  3 snd_hda_codec,snd_hda_intel,snd_hda_controller
> rtl8192c_common        55680  1 rtl8192ce
> r8169                  68816  0
> rtlwifi                80372  3 rtl_pci,rtl8192c_common,rtl8192ce
> snd_timer              18498  1 snd_pcm
> snd                    56880  10 snd_hwdep,snd_timer,snd_pcm,snd_hda_codec_generic,snd_hda_codec,snd_hda_intel
>               total        used        free      shared  buff/cache   available
> Mem:        2041172      390684      887028       59576      763460     1547464
> Swap:       4194300           0     4194300
> /usr/lib64/pm-utils/sleep.d/00logging suspend suspend: success.
> 
> Ruing hook /usr/lib64/pm-utils/sleep.d/00powersave suspend suspend:
> Blacklisting 01grub.
> Blacklisting 90clock.
> /usr/lib64/pm-utils/sleep.d/00powersave suspend suspend: success.
> 
> Ruing hook /usr/lib64/pm-utils/sleep.d/01grub suspend suspend:
> /usr/lib64/pm-utils/sleep.d/01grub suspend suspend: disabled.
> 
> Ruing hook /usr/lib64/pm-utils/sleep.d/50unload_alx suspend suspend:
> /usr/lib64/pm-utils/sleep.d/50unload_alx suspend suspend: success.
> 
> Ruing hook /usr/lib64/pm-utils/sleep.d/75modules suspend suspend:
> /usr/lib64/pm-utils/sleep.d/75modules suspend suspend: success.
> 
> Ruing hook /usr/lib64/pm-utils/sleep.d/90clock suspend suspend:
> /usr/lib64/pm-utils/sleep.d/90clock suspend suspend: disabled.
> 
> Ruing hook /usr/lib64/pm-utils/sleep.d/94cpufreq suspend suspend:
> /usr/lib64/pm-utils/sleep.d/94cpufreq suspend suspend: success.
> 
> Ruing hook /usr/lib64/pm-utils/sleep.d/95led suspend suspend:
> /usr/lib64/pm-utils/sleep.d/95led suspend suspend: not applicable.
> 
> Ruing hook /usr/lib64/pm-utils/sleep.d/98video-quirk-db-handler suspend suspend:
> Keel modesetting video driver detected, not using quirks.
> /usr/lib64/pm-utils/sleep.d/98video-quirk-db-handler suspend suspend: success.
> 
> Ruing hook /usr/lib64/pm-utils/sleep.d/99video suspend suspend:
> keel.acpi_video_flags = 0
> /usr/lib64/pm-utils/sleep.d/99video suspend suspend: success.
> 
> Sun Feb 28 11:39:08 MSK 2016: performing suspend

I don't see anything suspicious in it, with the exception that it doesn't seem to contain anything about the resume.

The Gentoo Wiki mentions that "disabling the security chip in BIOS" may help, but I don't seem to have any setting in BIOS saying anything about "security chips".

What could be the problem and how could I fix it?

- - , .