------------[ cut here ]------------ [49569.493760] WARNING: CPU: 1 PID: 9249 at /build/linux-dcxD3m/linux-4.4.0/include/drm/drm_crtc.h:1582 drm_helper_choose_encoder_dpms+0x8a/0x90 [drm_kms_helper]() [49569.493762] Modules linked in: arc4 ppp_mppe ppp_async crc_ccitt nf_conntrack_pptp nf_conntrack_proto_gre nf_conntrack nls_utf8 isofs rfcomm rpcsec_gss_krb5 nfsv4 nfs fscache bnep binfmt_misc kvm irqbypass serio_raw edac_mce_amd edac_core k10temp input_leds btusb btrtl i2c_piix4 btbcm btintel snd_hda_codec_realtek bluetooth snd_hda_codec_generic snd_hda_codec_hdmi snd_hda_intel snd_hda_codec snd_hda_core snd_hwdep snd_pcm snd_seq_midi snd_seq_midi_event snd_rawmidi snd_seq snd_seq_device snd_timer snd soundcore shpchp tpm_infineon 8250_fintek mac_hid nfsd auth_rpcgss nfs_acl lockd grace it87 hwmon_vid sunrpc parport_pc ppdev lp parport autofs4 dm_mirror dm_region_hash dm_log pata_acpi hid_generic usbhid hid mxm_wmi amdkfd uas amd_iommu_v2 usb_storage radeon r8169 mii i2c_algo_bit ttm firewire_ohci [49569.493803] firewire_core drm_kms_helper crc_itu_t syscopyarea sysfillrect sysimgblt fb_sys_fops aacraid drm pata_jmicron pata_atiixp ahci libahci wmi fjes [49569.493817] CPU: 1 PID: 9249 Comm: kworker/1:1 Tainted: G W 4.4.0-31-generic #50-Ubuntu [49569.493819] Hardware name: Gigabyte Technology Co., Ltd. GA-990FXA-UD3/GA-990FXA-UD3, BIOS FFa 01/24/2013 [49569.493855] Workqueue: events radeon_dp_work_func [radeon] [49569.493857] 0000000000000286 00000000543fec29 ffff88018e3d3d28 ffffffff813f1143 [49569.493860] 0000000000000000 ffffffffc0139e10 ffff88018e3d3d60 ffffffff81081102 [49569.493862] ffff880231074800 ffff8802307ff800 ffff880236393000 0000000000000003 [49569.493864] Call Trace: [49569.493870] [] dump_stack+0x63/0x90 [49569.493874] [] warn_slowpath_common+0x82/0xc0 [49569.493876] [] warn_slowpath_null+0x1a/0x20 [49569.493881] [] drm_helper_choose_encoder_dpms+0x8a/0x90 [drm_kms_helper] [49569.493886] [] drm_helper_connector_dpms+0x4b/0x100 [drm_kms_helper] [49569.493904] [] radeon_connector_hotplug+0xf7/0x100 [radeon] [49569.493921] [] radeon_dp_work_func+0x3f/0x60 [radeon] [49569.493925] [] process_one_work+0x165/0x480 [49569.493927] [] worker_thread+0x4b/0x4c0 [49569.493929] [] ? process_one_work+0x480/0x480 [49569.493931] [] ? process_one_work+0x480/0x480 [49569.493934] [] kthread+0xd8/0xf0 [49569.493936] [] ? kthread_create_on_node+0x1e0/0x1e0 [49569.493939] [] ret_from_fork+0x3f/0x70 [49569.493941] [] ? kthread_create_on_node+0x1e0/0x1e0 [49569.493942] ---[ end trace 975706721f0caf89 ]--- [49569.493944] ------------[ cut here ]------------ [49569.493950] WARNING: CPU: 1 PID: 9249 at /build/linux-dcxD3m/linux-4.4.0/include/drm/drm_crtc.h:1582 drm_helper_choose_crtc_dpms+0x93/0xa0 [drm_kms_helper]() [49569.493951] Modules linked in: arc4 ppp_mppe ppp_async crc_ccitt nf_conntrack_pptp nf_conntrack_proto_gre nf_conntrack nls_utf8 isofs rfcomm rpcsec_gss_krb5 nfsv4 nfs fscache bnep binfmt_misc kvm irqbypass serio_raw edac_mce_amd edac_core k10temp input_leds btusb btrtl i2c_piix4 btbcm btintel snd_hda_codec_realtek bluetooth snd_hda_codec_generic snd_hda_codec_hdmi snd_hda_intel snd_hda_codec snd_hda_core snd_hwdep snd_pcm snd_seq_midi snd_seq_midi_event snd_rawmidi snd_seq snd_seq_device snd_timer snd soundcore shpchp tpm_infineon 8250_fintek mac_hid nfsd auth_rpcgss nfs_acl lockd grace it87 hwmon_vid sunrpc parport_pc ppdev lp parport autofs4 dm_mirror dm_region_hash dm_log pata_acpi hid_generic usbhid hid mxm_wmi amdkfd uas amd_iommu_v2 usb_storage radeon r8169 mii i2c_algo_bit ttm firewire_ohci [49569.493978] firewire_core drm_kms_helper crc_itu_t syscopyarea sysfillrect sysimgblt fb_sys_fops aacraid drm pata_jmicron pata_atiixp ahci libahci wmi fjes [49569.493984] CPU: 1 PID: 9249 Comm: kworker/1:1 Tainted: G W 4.4.0-31-generic #50-Ubuntu [49569.493985] Hardware name: Gigabyte Technology Co., Ltd. GA-990FXA-UD3/GA-990FXA-UD3, BIOS FFa 01/24/2013 [49569.494003] Workqueue: events radeon_dp_work_func [radeon] [49569.494004] 0000000000000286 00000000543fec29 ffff88018e3d3d28 ffffffff813f1143 [49569.494006] 0000000000000000 ffffffffc0139e10 ffff88018e3d3d60 ffffffff81081102 [49569.494008] ffff880231074800 ffff880236393000 ffff880236393000 0000000000000003 [49569.494010] Call Trace: [49569.494012] [] dump_stack+0x63/0x90 [49569.494014] [] warn_slowpath_common+0x82/0xc0 [49569.494017] [] warn_slowpath_null+0x1a/0x20 [49569.494022] [] drm_helper_choose_crtc_dpms+0x93/0xa0 [drm_kms_helper] [49569.494027] [] drm_helper_connector_dpms+0x77/0x100 [drm_kms_helper] [49569.494042] [] ? atombios_blank_crtc+0x150/0x150 [radeon] [49569.494059] [] radeon_connector_hotplug+0xf7/0x100 [radeon] [49569.494077] [] radeon_dp_work_func+0x3f/0x60 [radeon] [49569.494079] [] process_one_work+0x165/0x480 [49569.494081] [] worker_thread+0x4b/0x4c0 [49569.494083] [] ? process_one_work+0x480/0x480 [49569.494085] [] ? process_one_work+0x480/0x480 [49569.494087] [] kthread+0xd8/0xf0 [49569.494089] [] ? kthread_create_on_node+0x1e0/0x1e0 [49569.494091] [] ret_from_fork+0x3f/0x70 [49569.494093] [] ? kthread_create_on_node+0x1e0/0x1e0 [49569.494095] ---[ end trace 975706721f0caf8a ]--- [49569.505653] [drm:radeon_dp_link_train [radeon]] *ERROR* channel eq failed: 5 tries [49569.505682] [drm:radeon_dp_link_train [radeon]] *ERROR* channel eq failed