Additional info: reporter: libreport-2.6.3 WARNING: CPU: 4 PID: 725 at include/drm/drm_crtc.h:1577 drm_helper_choose_encoder_dpms+0x8a/0x90 [drm_kms_helper]() Modules linked in: rfcomm nfsv3 nfs_acl nfs lockd grace sunrpc fscache cmac xt_CHECKSUM ipt_MASQUERADE nf_nat_masquerade_ipv4 tun nf_conntrack_netbios_ns nf_conntrack_broadcast ip6t_rpfilter ip6t_REJECT nf_reject_ipv6 xt_conntrack ebtable_filter ebtable_nat ebtable_broute bridge stp llc ebtables ip6table_raw ip6table_nat nf_conntrack_ipv6 nf_defrag_ipv6 nf_nat_ipv6 ip6table_mangle ip6table_security ip6table_filter ip6_tables iptable_raw iptable_nat nf_conntrack_ipv4 nf_defrag_ipv4 nf_nat_ipv4 nf_nat nf_conntrack iptable_mangle iptable_security bnep fuse vmw_vsock_vmci_transport vsock vmw_vmci hp_wmi iTCO_wdt ppdev iTCO_vendor_support sparse_keymap snd_hda_codec_hdmi tpm_infineon intel_rapl iosf_mbi x86_pkg_temp_thermal coretemp vfat kvm_intel fat btusb btrtl btbcm snd_hda_codec_realtek btintel kvm bluetooth snd_hda_codec_generic crct10dif_pclmul crc32_pclmul snd_hda_intel crc32c_intel snd_hda_codec snd_hda_core snd_hwdep snd_seq rfkill joydev snd_seq_device snd_pcm i2c_i801 snd_timer parport_pc snd mei_me parport mei ie31200_edac soundcore shpchp edac_core lpc_ich tpm_tis tpm binfmt_misc hid_logitech_hidpp hid_logitech_dj nouveau mxm_wmi i2c_algo_bit drm_kms_helper ttm drm e1000e serio_raw ptp pps_core wmi fjes video CPU: 4 PID: 725 Comm: kworker/4:3 Not tainted 4.3.3-300.fc23.x86_64 #1 Hardware name: Hewlett-Packard HP Compaq Pro 6300 SFF/339A, BIOS K01 v02.90 07/16/2013 Workqueue: events nvif_notify_work [nouveau] 0000000000000000 000000004c8d6e35 ffff8807f80cfd10 ffffffff813a626f 0000000000000000 ffff8807f80cfd48 ffffffff810a07c2 ffff8807f45c7000 ffff8807f5f09600 ffff8807f62d3000 0000000000000003 ffff8807f62d13e8 Call Trace: [<ffffffff813a626f>] dump_stack+0x44/0x55 [<ffffffff810a07c2>] warn_slowpath_common+0x82/0xc0 [<ffffffff810a090a>] warn_slowpath_null+0x1a/0x20 [<ffffffffa016c2ca>] drm_helper_choose_encoder_dpms+0x8a/0x90 [drm_kms_helper] [<ffffffffa016c3bb>] drm_helper_connector_dpms+0x4b/0x100 [drm_kms_helper] [<ffffffffa01d110d>] ? g94_aux_mask+0x8d/0xa0 [nouveau] [<ffffffffa02353bb>] nouveau_connector_hotplug+0x3b/0xb0 [nouveau] [<ffffffffa0196a77>] nvif_notify_work+0x27/0xa0 [nouveau] [<ffffffff8178109e>] ? _raw_spin_unlock_irqrestore+0xe/0x10 [<ffffffff810b861d>] ? pwq_dec_nr_in_flight+0x4d/0xa0 [<ffffffff810b8cde>] process_one_work+0x19e/0x3f0 [<ffffffff810b8f7e>] worker_thread+0x4e/0x450 [<ffffffff8177cf31>] ? __schedule+0x371/0x980 [<ffffffff810b8f30>] ? process_one_work+0x3f0/0x3f0 [<ffffffff810b8f30>] ? process_one_work+0x3f0/0x3f0 [<ffffffff810bede8>] kthread+0xd8/0xf0 [<ffffffff810bed10>] ? kthread_worker_fn+0x160/0x160 [<ffffffff8178199f>] ret_from_fork+0x3f/0x70 [<ffffffff810bed10>] ? kthread_worker_fn+0x160/0x160
Created attachment 1115531 [details] File: dmesg
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(In reply to Karl Latiss from comment #1) > Created attachment 1115531 [details] > File: dmesg [ 1.195062] nouveau 0000:01:00.0: NVIDIA GF119 (0d93c0a1) This WARNING is still seen with 4.4 series, e.g. kernel-debug-{core,modules}-4.4.3-201.fc22.x86_64 but it is solved with 4.5 series, e.g. kernel-debug-{core,modules}-4.5.0-0.rc5.git0.2.fc24.x86_64 i.e. it is solved for quite some time, see https://bugs.freedesktop.org/show_bug.cgi?id=92307#c34 Would you mind to confirm this is solved for your case too, or not.
I have not seen the warning for over a week (since I installed kernel-4.3.5-300.fc23.x86_64).
I also saw the warning vanish, but it returned with the update to kernel 4.4.2-301.fc23.x86_64 #1 in Fedora 23.
(In reply to Karl Latiss from comment #5) > I have not seen the warning for over a week (since I installed > kernel-4.3.5-300.fc23.x86_64). WARNING(s) goes with kernel-debug-{core,modules} less than or equal to 4.4 series, while S3(STR) RESUME or/and XRandR DPMS routine. Note "debug" kernel/modules, -NOT- standard "nodebug" kernel/modules ;) https://kojipkgs.fedoraproject.org//packages/kernel/
(In reply to John Sauter from comment #6) > I also saw the warning vanish, but it returned with the update to kernel > 4.4.2-301.fc23.x86_64 #1 in Fedora 23. WARNING(s) goes within particular case scenario, not randomly. See reply to Karl.
OK, except when I reported this I wasn't running kernel-debug-{core,modules}.
This bug is also tracked upstream here: https://bugs.freedesktop.org/show_bug.cgi?id=92307 And is fixed upstream by this commit: https://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=0a882cadbc63fd2da3994af7115b4ada2fcbd638 Which is in stable kernel 4.4.4 and later, F22+ is at 4.4.6, closing.