Description of problem: Logged in and found this message. I do not yet know what caused it. Additional info: reporter: libreport-2.2.3 WARNING: CPU: 0 PID: 1421 at drivers/gpu/drm/i915/intel_ddi.c:960 intel_ddi_pll_enable+0x253/0x260 [i915]() WRPLL1 already enabled Modules linked in: ip6t_rpfilter ip6t_REJECT xt_conntrack bnep 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 vfat fat x86_pkg_temp_thermal iTCO_wdt iTCO_vendor_support coretemp kvm_intel kvm dcdbas crct10dif_pclmul crc32_pclmul crc32c_intel ghash_clmulni_intel snd_hda_codec_realtek snd_hda_codec_hdmi snd_hda_codec_generic arc4 snd_hda_intel joydev snd_hda_controller snd_hda_codec ath9k ath9k_common snd_hwdep ath9k_hw snd_seq snd_seq_device microcode ath serio_raw mac80211 snd_pcm cfg80211 i2c_i801 ath3k btusb mei_me lpc_ich bluetooth mfd_core mei rfkill shpchp tpm_tis snd_timer snd soundcore tpm nfsd auth_rpcgss nfs_acl lockd sunrpc uas usb_storage i915 i2c_algo_bit drm_kms_helper drm r8169 mii i2c_core video CPU: 0 PID: 1421 Comm: kworker/u8:18 Not tainted 3.15.8-200.fc20.x86_64 #1 Hardware name: Dell Inc. Inspiron 3847/088DT1 , BIOS A02 12/03/2013 Workqueue: events_unbound async_run_entry_fn 0000000000000000 0000000015415f16 ffff880201b73a10 ffffffff816ef9ae ffff880201b73a58 ffff880201b73a48 ffffffff8108933d ffff880211f68000 00000000b02a081d 0000000000046040 ffffffffa0145e9d 0000000000000001 Call Trace: [<ffffffff816ef9ae>] dump_stack+0x45/0x56 [<ffffffff8108933d>] warn_slowpath_common+0x7d/0xa0 [<ffffffff810893bc>] warn_slowpath_fmt+0x5c/0x80 [<ffffffffa0108a43>] intel_ddi_pll_enable+0x253/0x260 [i915] [<ffffffffa00ee748>] haswell_crtc_mode_set+0x48/0x4c0 [i915] [<ffffffffa00f27bb>] __intel_set_mode+0x69b/0x1640 [i915] [<ffffffffa00f7bc0>] intel_modeset_setup_hw_state+0x790/0xcd0 [i915] [<ffffffffa00a12ac>] __i915_drm_thaw+0x12c/0x200 [i915] [<ffffffffa00a1c98>] i915_resume+0x28/0x50 [i915] [<ffffffffa00a1cd6>] i915_pm_resume+0x16/0x20 [i915] [<ffffffff8138f67d>] pci_pm_restore+0x7d/0xd0 [<ffffffff8138f600>] ? pci_pm_suspend_noirq+0x1a0/0x1a0 [<ffffffff814694a9>] dpm_run_callback+0x49/0xa0 [<ffffffff814697a6>] device_resume+0xc6/0x1f0 [<ffffffff814698ed>] async_resume+0x1d/0x50 [<ffffffff810b26b9>] async_run_entry_fn+0x39/0x120 [<ffffffff810a4af6>] process_one_work+0x176/0x430 [<ffffffff810a578b>] worker_thread+0x11b/0x3a0 [<ffffffff810a5670>] ? rescuer_thread+0x3b0/0x3b0 [<ffffffff810ac528>] kthread+0xd8/0xf0 [<ffffffff810ac450>] ? insert_kthread_work+0x40/0x40 [<ffffffff816ff93c>] ret_from_fork+0x7c/0xb0 [<ffffffff810ac450>] ? insert_kthread_work+0x40/0x40
Created attachment 926549 [details] File: dmesg
*** This bug has been marked as a duplicate of bug 1122425 ***