18.981021] snd_hda_intel 0000:00:1f.3: azx_get_response timeout, switching to polling mode: last cmd=0x000f0000 
[ 19.989801] snd_hda_intel 0000:00:1f.3: No response from codec, disabling MSI: last cmd=0x000f0000 
[ 20.998636] snd_hda_intel 0000:00:1f.3: Codec #0 probe error; disabling it... 


[ 21.008412] input: HDA Intel PCH HDMI/DP,pcm=3 as /devices/pci0000:00/0000:00:1f.3/sound/card0/input17 
[ 21.008503] input: HDA Intel PCH HDMI/DP,pcm=7 as /devices/pci0000:00/0000:00:1f.3/sound/card0/input18 
[ 22.002081] wlan0: authenticate with ec:1a:59:17:18:5d 
[ 22.011486] wlan0: direct probe to ec:1a:59:17:18:5d (try 1/3) 
[ 22.217656] wlan0: direct probe to ec:1a:59:17:18:5d (try 2/3) 
[ 22.421631] wlan0: direct probe to ec:1a:59:17:18:5d (try 3/3) 
[ 22.623901] wlan0: authentication with ec:1a:59:17:18:5d timed out 
[ 31.328010] [drm:skl_set_power_well [i915_bpo]] *ERROR* CSR firmware not ready (2) 
[ 41.411082] ------------[ cut here ]------------ 
[ 41.411107] WARNING: CPU: 0 PID: 1514 at /build/linux-lts-vivid-1jarlV/linux-lts-vivid-3.19.0/ubuntu/i915/intel_csr.c:462 assert_csr_loaded+0xa7/0x100 [i915_bpo]() 
[ 41.411108] CSR is not loaded. 
[ 41.411109] Modules linked in: snd_hda_codec_hdmi pci_stub vboxpci(OE) vboxnetadp(OE) vboxnetflt(OE) vboxdrv(OE) ip6t_REJECT nf_reject_ipv6 nf_log_ipv6 xt_hl ip6t_rt arc4 nf_conntrack_ipv6 nf_defrag_ipv6 ipt_REJECT nf_reject_ipv4 nf_log_ipv4 nf_log_common snd_hda_intel xt_LOG snd_hda_controller snd_hda_codec snd_hwdep snd_pcm iwlmvm uvcvideo xt_limit videobuf2_vmalloc videobuf2_memops videobuf2_core mac80211 v4l2_common xt_tcpudp snd_seq_midi videodev snd_seq_midi_event media snd_rawmidi xt_addrtype hp_wmi sparse_keymap btusb snd_seq x86_pkg_temp_thermal coretemp kvm_intel iwlwifi nf_conntrack_ipv4 nf_defrag_ipv4 xt_conntrack kvm ip6table_filter ip6_tables nf_conntrack_netbios_ns nf_conntrack_broadcast nf_nat_ftp nf_nat nf_conntrack_ftp nf_conntrack iptable_filter joydev snd_seq_device snd_timer ip_tables x_tables snd cfg80211 serio_raw i915_bpo soundcore intel_ips shpchp drm_kms_helper drm i2c_algo_bit hp_accel lis3lv02d input_polldev bnep hp_wireless tpm_infineon rfcomm acpi_pad bluetooth mac_hid binfmt_misc parport_pc ppdev lp parport dm_crypt crct10dif_pclmul crc32_pclmul ghash_clmulni_intel aesni_intel aes_x86_64 lrw gf128mul glue_helper ablk_helper cryptd psmouse r8169 ahci mii libahci wmi video 
[ 41.411153] CPU: 0 PID: 1514 Comm: Xorg Tainted: G OE 3.19.0-39-generic #44~14.04.1-Ubuntu 
[ 41.411154] Hardware name: HP HP ProBook 470 G3/8102, BIOS N78 Ver. 01.02 09/30/2015 
[ 41.411155] ffffffffc042a5a0 ffff880255957a88 ffffffff817af92b 0000000000000000 
[ 41.411157] ffff880255957ad8 ffff880255957ac8 ffffffff81074e0a ffff880255957b88 
[ 41.411159] ffff8800934c0000 ffff8800934c02b0 0000000000000002 000000003000000f 
[ 41.411161] Call Trace: 
[ 41.411168] [<ffffffff817af92b>] dump_stack+0x45/0x57 
[ 41.411171] [<ffffffff81074e0a>] warn_slowpath_common+0x8a/0xc0 
[ 41.411173] [<ffffffff81074e86>] warn_slowpath_fmt+0x46/0x50 
[ 41.411189] [<ffffffffc03b2aae>] ? gen9_read32+0x6e/0x2f0 [i915_bpo] 
[ 41.411200] [<ffffffffc03717d7>] assert_csr_loaded+0xa7/0x100 [i915_bpo] 
[ 41.411212] [<ffffffffc03703ab>] skl_set_power_well+0x75b/0xae0 [i915_bpo] 
[ 41.411223] [<ffffffffc0370763>] skl_power_well_enable+0x13/0x20 [i915_bpo] [ 41.411232] [<ffffffffc0370a26>] intel_display_power_get+0xa6/0x100 [i915_bpo] 
[ 41.411250] [<ffffffffc03f48f1>] intel_dp_detect+0xa1/0x420 [i915_bpo] 
[ 41.411256] [<ffffffffc0340afb>] drm_helper_probe_single_connector_modes_merge_bits+0x2fb/0x450 [drm_kms_helper] 
[ 41.411263] [<ffffffffc0340c63>] drm_helper_probe_single_connector_modes+0x13/0x20 [drm_kms_helper] 
[ 41.411276] [<ffffffffc02dd6a7>] drm_mode_getconnector+0x397/0x420 [drm] 
3[ 41.411289] [<ffffffffc02e90cd>] ? drm_modeset_lock+0x3d/0x110 [drm] 
[ 41.411297] [<ffffffffc02cea4c>] drm_ioctl+0x1ec/0x660 [drm] 
[ 41.411301] [<ffffffff811ffc88>] do_vfs_ioctl+0x2f8/0x510 
[ 41.411304] [<ffffffff816908d5>] ? __sys_recvmsg+0x65/0x80 
[ 41.411305] [<ffffffff811fff21>] SyS_ioctl+0x81/0xa0 
[ 41.411308] [<ffffffff817b738d>] system_call_fastpath+0x16/0x1b