Description of problem: Just came up from hibernation and saw this error. Additional info: reporter: libreport-2.2.3 WARNING: CPU: 1 PID: 1467 at drivers/gpu/drm/i915/intel_ddi.c:960 intel_ddi_pll_enable+0x253/0x260 [i915]() WRPLL1 already enabled Modules linked in: bnep ip6t_rpfilter ip6t_REJECT xt_conntrack ebtable_nat ebtable_broute bridge stp llc ebtable_filter ebtables ip6table_nat nf_conntrack_ipv6 nf_defrag_ipv6 nf_nat_ipv6 ip6table_mangle ip6table_security ip6table_raw ip6table_filter ip6_tables iptable_nat nf_conntrack_ipv4 nf_defrag_ipv4 nf_nat_ipv4 nf_nat nf_conntrack iptable_mangle iptable_security iptable_raw arc4 ath9k ath9k_common ath9k_hw x86_pkg_temp_thermal coretemp kvm_intel ath snd_hda_codec_realtek snd_hda_codec_hdmi snd_hda_codec_generic snd_hda_intel snd_hda_controller snd_hda_codec kvm snd_hwdep mac80211 crct10dif_pclmul iTCO_wdt snd_seq snd_seq_device crc32_pclmul snd_pcm iTCO_vendor_support crc32c_intel serio_raw snd_timer ghash_clmulni_intel dcdbas cfg80211 snd microcode joydev lpc_ich i2c_i801 soundcore ath3k btusb shpchp mei_me mei mfd_core bluetooth rfkill tpm_tis tpm nfsd auth_rpcgss nfs_acl lockd sunrpc i915 i2c_algo_bit drm_kms_helper drm r8169 mii i2c_core video CPU: 1 PID: 1467 Comm: kworker/u8:81 Not tainted 3.15.10-200.fc20.x86_64 #1 Hardware name: Dell Inc. Inspiron 3847/088DT1 , BIOS A02 12/03/2013 Workqueue: events_unbound async_run_entry_fn 0000000000000000 000000001b186555 ffff8800cc883a10 ffffffff816ef9c8 ffff8800cc883a58 ffff8800cc883a48 ffffffff8108931d ffff880211f8c000 00000000b02a081d 0000000000046040 ffffffffa0130ea5 0000000000000001 Call Trace: [<ffffffff816ef9c8>] dump_stack+0x45/0x56 [<ffffffff8108931d>] warn_slowpath_common+0x7d/0xa0 [<ffffffff8108939c>] warn_slowpath_fmt+0x5c/0x80 [<ffffffffa00f3a43>] intel_ddi_pll_enable+0x253/0x260 [i915] [<ffffffffa00d9748>] haswell_crtc_mode_set+0x48/0x4c0 [i915] [<ffffffffa00dd7bb>] __intel_set_mode+0x69b/0x1640 [i915] [<ffffffffa00e2bc0>] intel_modeset_setup_hw_state+0x790/0xcd0 [i915] [<ffffffffa008c2ac>] __i915_drm_thaw+0x12c/0x200 [i915] [<ffffffffa008cc98>] i915_resume+0x28/0x50 [i915] [<ffffffffa008ccd6>] i915_pm_resume+0x16/0x20 [i915] [<ffffffff8138f72d>] pci_pm_restore+0x7d/0xd0 [<ffffffff8138f6b0>] ? pci_pm_suspend_noirq+0x1a0/0x1a0 [<ffffffff81469559>] dpm_run_callback+0x49/0xa0 [<ffffffff81469856>] device_resume+0xc6/0x1f0
Created attachment 932876 [details] File: dmesg
*** This bug has been marked as a duplicate of bug 1122425 ***