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I'm not completely sure what's happening but after resuming from suspend
eth0 stops working all the time.  Dmesg seems to indicate that the intel
driver is responsible?

Dmesg says:
[16066.244100] ------------[ cut here ]------------
[16066.244187] WARNING: CPU: 0 PID: 0 at /build/buildd/linux-3.19.0/drivers/gpu/drm/i915/intel_display.c:9717 intel_check_page_flip+0xda/0xf0 [i915]()
[16066.244189] Kicking stuck page flip: queued at 820384, now 820396
[16066.244191] Modules linked in: ctr ccm binfmt_misc bbswitch(OE) nls_iso8859_1 i915_bpo snd_hda_codec_idt snd_hda_codec_generic intel_ips arc4 intel_rapl iosf_mbi x86_pkg_temp_thermal intel_powerclamp coretemp ath9k ath9k_common kvm ath9k_hw snd_hda_intel snd_hda_controller snd_hda_codec crct10dif_pclmul crc32_pclmul ath uvcvideo snd_hwdep mac80211 ghash_clmulni_intel videobuf2_vmalloc snd_pcm videobuf2_memops videobuf2_core aesni_intel i915 v4l2_common aes_x86_64 videodev lrw snd_seq_midi media snd_seq_midi_event gf128mul glue_helper cfg80211 snd_rawmidi ablk_helper cryptd snd_seq drm_kms_helper snd_seq_device joydev snd_timer drm serio_raw snd ie31200_edac mei_me soundcore mei i2c_algo_bit lpc_ich shpchp edac_core ideapad_laptop soc_button_array sparse_keymap wmi video mac_hid parport_pc ppdev lp
[16066.244230]  parport autofs4 uas usb_storage ahci psmouse alx libahci mdio
[16066.244240] CPU: 0 PID: 0 Comm: swapper/0 Tainted: G        W  OE  3.19.0-18-generic #18-Ubuntu
[16066.244242] Hardware name: LENOVO 20250/Durian 7A1, BIOS 7FCN95WW 04/29/2014
[16066.244243]  ffffffffc065dde8 ffff88035f203d28 ffffffff817c27cd 0000000000000007
[16066.244245]  ffff88035f203d78 ffff88035f203d68 ffffffff8107593a ffff88035f203d88
[16066.244247]  ffff880350a94000 ffff88034cdfd000 0000000000000000 ffff88034cdfd1a8
[16066.244249] Call Trace:
[16066.244251]  <IRQ>  [<ffffffff817c27cd>] dump_stack+0x45/0x57
[16066.244267]  [<ffffffff8107593a>] warn_slowpath_common+0x8a/0xc0
[16066.244269]  [<ffffffff810759b6>] warn_slowpath_fmt+0x46/0x50
[16066.244288]  [<ffffffffc06098fa>] intel_check_page_flip+0xda/0xf0 [i915]
[16066.244306]  [<ffffffffc05d67f8>] ironlake_irq_handler+0x2e8/0xfd0 [i915]
[16066.244314]  [<ffffffff810b0e00>] ? rebalance_domains+0xe0/0x280
[16066.244322]  [<ffffffff810cd577>] handle_irq_event_percpu+0x77/0x1a0
[16066.244324]  [<ffffffff810cd6e1>] handle_irq_event+0x41/0x70
[16066.244328]  [<ffffffff810d074e>] handle_edge_irq+0x6e/0x120
[16066.244331]  [<ffffffff81017772>] handle_irq+0x22/0x40
[16066.244334]  [<ffffffff817cc83f>] do_IRQ+0x4f/0xf0
[16066.244336]  [<ffffffff817ca6ad>] common_interrupt+0x6d/0x6d
[16066.244337]  <EOI>  [<ffffffff81664bd5>] ? cpuidle_enter_state+0x65/0x160
[16066.244341]  [<ffffffff81664bc1>] ? cpuidle_enter_state+0x51/0x160
[16066.244343]  [<ffffffff81664db7>] cpuidle_enter+0x17/0x20
[16066.244345]  [<ffffffff810b6a51>] cpu_startup_entry+0x311/0x3b0
[16066.244349]  [<ffffffff817b7397>] rest_init+0x77/0x80
[16066.244354]  [<ffffffff81d4cfce>] start_kernel+0x482/0x48f
[16066.244356]  [<ffffffff81d4c120>] ? early_idt_handlers+0x120/0x120
[16066.244358]  [<ffffffff81d4c4d7>] x86_64_start_reservations+0x2a/0x2c
[16066.244360]  [<ffffffff81d4c61c>] x86_64_start_kernel+0x143/0x152
[16066.244361] ---[ end trace 5d72b504d95d3a93 ]---

** Affects: linux (Ubuntu)
     Importance: Low
         Status: Incomplete

-- 
intel driver keeps crashing after suspend
https://bugs.launchpad.net/bugs/1462728
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