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<b><a class="bz_bug_link
bz_status_NEW "
title="NEW - Intel HD 520 failed to train DP when connected with a external monitor"
href="https://bugs.freedesktop.org/show_bug.cgi?id=93578#c26">Comment # 26</a>
on <a class="bz_bug_link
bz_status_NEW "
title="NEW - Intel HD 520 failed to train DP when connected with a external monitor"
href="https://bugs.freedesktop.org/show_bug.cgi?id=93578">bug 93578</a>
from <span class="vcard"><a class="email" href="mailto:lesiehnie@web.de" title="lesiehnie@web.de">lesiehnie@web.de</a>
</span></b>
<pre>Neither the DA200 nor the WD 15 dock work with kernel 4.5.1, but the situation
somehow (coincidently?) changed. I got a kernel OOOOPS but no system hangs. The
display port worked with the WD15 at very low resolutions (eg. 1024x768).
xrandr with the DA200 showed all possible screen resolutions via HDMI, but I
wasn't able to get an image at the screen.
dmesg log WD15:
[ 130.806010] [drm:intel_dp_link_training_clock_recovery [i915]] *ERROR*
failed to get link status
[ 130.873667] ------------[ cut here ]------------
[ 130.873677] WARNING: CPU: 1 PID: 796 at drivers/gpu/drm/i915/intel_pm.c:3553
skl_update_other_pipe_wm+0xb7/0xf3 [i915]()
[ 130.873678] WARN_ON(!wm_changed)
[ 130.873679] Modules linked in:
[ 130.873680] rfcomm bnep cpufreq_conservative cpufreq_userspace
cpufreq_powersave cpufreq_stats snd_hda_codec_hdmi dell_led
snd_hda_codec_realtek snd_hda_codec_generic snd_usb_audio snd_hwdep
snd_usbmidi_lib snd_rawmidi snd_seq_device btusb btrtl cdc_ether usbnet
hid_multitouch uvcvideo videobuf2_vmalloc videobuf2_memops videobuf2_v4l2
usbhid videodev videobuf2_core r8152 mii dell_wmi coretemp intel_rapl
x86_pkg_temp_thermal intel_powerclamp kvm_intel kvm irqbypass crct10dif_pclmul
crct10dif_common crc32_pclmul ghash_clmulni_intel aesni_intel aes_x86_64 hwmon
lrw gf128mul dell_laptop glue_helper ablk_helper cryptd pcspkr serio_raw
nls_utf8 nls_cp437 vfat fat i2c_i801 snd_hda_intel snd_hda_codec snd_hda_core
snd_pcm snd_timer snd soundcore brcmfmac brcmutil cfg80211
processor_thermal_device intel_lpss_pci
[ 130.873707] intel_soc_dts_iosf wmi battery i915 video hci_uart btbcm btqca
btintel bluetooth rfkill intel_lpss_acpi intel_lpss int3403_thermal
int340x_thermal_zone intel_hid sparse_keymap int3400_thermal acpi_thermal_rel
acpi_pad ac tpm_tis tpm processor evdev fbcon bitblit softcursor font button
i2c_algo_bit drm_kms_helper syscopyarea sysfillrect sysimgblt fb_sys_fops drm
intel_agp intel_gtt agpgart ipv6 rtsx_pci_sdmmc mmc_core crc32c_intel psmouse
rtsx_pci mfd_core xhci_pci xhci_hcd usbcore usb_common fan thermal i2c_hid hid
i2c_core rtc_cmos
[ 130.873729] CPU: 1 PID: 796 Comm: Xorg Not tainted 4.5.1 #205
[ 130.873730] Hardware name: Dell Inc. XPS 13 9350/0VM5NC, BIOS 1.2.3
01/08/2016
[ 130.873731] 0000000080000000 ffffffff8126c36b ffff88046774ba50
0000000000000009
[ 130.873733] ffffffff8103fb7b ffffffffa0405018 ffff88046c0dc000
ffff88046774baa8
[ 130.873735] ffff88046c23995c ffff88046c239960 ffffffff8103fbd3
ffffffffa04a1bf9
[ 130.873736] Call Trace:
[ 130.873740] [<ffffffff8126c36b>] ? dump_stack+0x46/0x59
[ 130.873743] [<ffffffff8103fb7b>] ? warn_slowpath_common+0x89/0x9e
[ 130.873750] [<ffffffffa0405018>] ? skl_update_other_pipe_wm+0xb7/0xf3
[i915]
[ 130.873751] [<ffffffff8103fbd3>] ? warn_slowpath_fmt+0x43/0x4b
[ 130.873757] [<ffffffffa0405018>] ? skl_update_other_pipe_wm+0xb7/0xf3
[i915]
[ 130.873764] [<ffffffffa0405160>] ? skl_update_wm+0x10c/0x4fd [i915]
[ 130.873767] [<ffffffff81429e36>] ? _raw_write_unlock_irqrestore+0xf/0x20
[ 130.873775] [<ffffffffa046c320>] ?
intel_ddi_enable_transcoder_func+0x1af/0x1bb [i915]
[ 130.873785] [<ffffffffa045476f>] ? haswell_crtc_enable+0x351/0x74c [i915]
[ 130.873795] [<ffffffffa0451cd9>] ? intel_atomic_commit+0x604/0x1118 [i915]
[ 130.873800] [<ffffffffa021ace1>] ? drm_atomic_check_only+0x273/0x52a [drm]
[ 130.873803] [<ffffffffa026cb03>] ? drm_atomic_helper_set_config+0x45/0x8c
[drm_kms_helper]
[ 130.873808] [<ffffffffa020db23>] ? drm_mode_set_config_internal+0x50/0xd7
[drm]
[ 130.873813] [<ffffffffa0211cd1>] ? drm_mode_setcrtc+0x3a0/0x410 [drm]
[ 130.873817] [<ffffffffa02067fd>] ? drm_ioctl+0x225/0x353 [drm]
[ 130.873822] [<ffffffffa0211931>] ? drm_mode_setplane+0x160/0x160 [drm]
[ 130.873824] [<ffffffff811002f4>] ? __vfs_write+0x96/0xbe
[ 130.873826] [<ffffffff8110e59c>] ? vfs_ioctl+0x16/0x23
[ 130.873828] [<ffffffff8110eaba>] ? do_vfs_ioctl+0x49e/0x50e
[ 130.873830] [<ffffffff8105a6ad>] ? get_parent_ip+0x9/0x1b
[ 130.873831] [<ffffffff8104701d>] ? recalc_sigpending+0x11/0x3e
[ 130.873832] [<ffffffff81047895>] ? __set_task_blocked+0x5a/0x5e
[ 130.873834] [<ffffffff81116563>] ? __fget+0x6b/0x75
[ 130.873836] [<ffffffff8110eb63>] ? SyS_ioctl+0x39/0x55
[ 130.873837] [<ffffffff8142a25b>] ? entry_SYSCALL_64_fastpath+0x16/0x6a
[ 130.873838] ---[ end trace b4915c96b8b1a80a ]---
dmesg log DA200
[ 2.630230] ------------[ cut here ]------------
[ 2.630304] WARNING: CPU: 0 PID: 69 at drivers/gpu/drm/i915/intel_pm.c:3553
skl_update_other_pipe_wm+0xb7/0xf3 [i915]()
[ 2.630312] WARN_ON(!wm_changed)
[ 2.630365] Modules linked in: btusb hid_multitouch btrtl uvcvideo
videobuf2_vmalloc videobuf2_memops videobuf2_v4l2 videodev videobuf2_core
usbhid cdc_ether usbnet r8152 mii dell_wmi core
[ 2.630391] ac acpi_pad tpm_tis tpm processor evdev fbcon bitblit
softcursor font button i2c_algo_bit drm_kms_helper syscopyarea sysfillrect
sysimgblt fb_sys_fops drm intel_agp intel_gtt
[ 2.630396] CPU: 0 PID: 69 Comm: kworker/0:2 Not tainted 4.5.1 #205
[ 2.630398] Hardware name: Dell Inc. XPS 13 9350/0VM5NC, BIOS 1.2.3
01/08/2016
[ 2.630409] Workqueue: events output_poll_execute [drm_kms_helper]
[ 2.630415] 0000000080000000 ffffffff8126c36b ffff88046d2f3aa8
0000000000000009
[ 2.630419] ffffffff8103fb7b ffffffffa0414018 ffff88046d976000
ffff88046d2f3b00
[ 2.630422] ffff88046c38995c ffff88046c389960 ffffffff8103fbd3
ffffffffa04b0bf9
[ 2.630423] Call Trace:
[ 2.630433] [<ffffffff8126c36b>] ? dump_stack+0x46/0x59
[ 2.630440] [<ffffffff8103fb7b>] ? warn_slowpath_common+0x89/0x9e
[ 2.630499] [<ffffffffa0414018>] ? skl_update_other_pipe_wm+0xb7/0xf3
[i915]
[ 2.630504] [<ffffffff8103fbd3>] ? warn_slowpath_fmt+0x43/0x4b
[ 2.630560] [<ffffffffa0414018>] ? skl_update_other_pipe_wm+0xb7/0xf3
[i915]
[ 2.630615] [<ffffffffa0414160>] ? skl_update_wm+0x10c/0x4fd [i915]
[ 2.630620] [<ffffffff81429e36>] ? _raw_write_unlock_irqrestore+0xf/0x20
[ 2.630700] [<ffffffffa047b320>] ?
intel_ddi_enable_transcoder_func+0x1af/0x1bb [i915]
[ 2.630777] [<ffffffffa046376f>] ? haswell_crtc_enable+0x351/0x74c [i915]
[ 2.630851] [<ffffffffa0460cd9>] ? intel_atomic_commit+0x604/0x1118 [i915]
[ 2.630865] [<ffffffffa01f7ce1>] ? drm_atomic_check_only+0x273/0x52a [drm]
[ 2.630873] [<ffffffffa024a54a>] ? restore_fbdev_mode+0x109/0x223
[drm_kms_helper]
[ 2.630879] [<ffffffffa024be41>] ?
drm_fb_helper_restore_fbdev_mode_unlocked+0x2b/0x5e [drm_kms_helper]
[ 2.630885] [<ffffffffa024beaa>] ? drm_fb_helper_set_par+0x36/0x41
[drm_kms_helper]
[ 2.630891] [<ffffffffa024be0e>] ? drm_fb_helper_hotplug_event+0xab/0xb3
[drm_kms_helper]
[ 2.630898] [<ffffffffa0241fef>] ? output_poll_execute+0x13b/0x18c
[drm_kms_helper]
[ 2.630904] [<ffffffff814272c1>] ? __schedule+0x5af/0x7b0
[ 2.630909] [<ffffffff8104fc50>] ? process_one_work+0x190/0x299
[ 2.630913] [<ffffffff81050819>] ? worker_thread+0x273/0x35d
[ 2.630918] [<ffffffff810505a6>] ? rescuer_thread+0x2b6/0x2b6
[ 2.630921] [<ffffffff81054544>] ? kthread+0xc1/0xc9
[ 2.630924] [<ffffffff81054483>] ? kthread_worker_fn+0x12e/0x12e
[ 2.630928] [<ffffffff8142a5df>] ? ret_from_fork+0x3f/0x70
[ 2.630931] [<ffffffff81054483>] ? kthread_worker_fn+0x12e/0x12e
[ 2.630947] ---[ end trace a8d82836c69cfaa8 ]---</pre>
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