[Bug 93578] Intel HD 520 failed to train DP when connected with a external monitor
bugzilla-daemon at freedesktop.org
bugzilla-daemon at freedesktop.org
Wed Feb 17 16:14:49 UTC 2016
https://bugs.freedesktop.org/show_bug.cgi?id=93578
--- Comment #14 from Oliver Deppert <Oliver.Deppert at gmail.com> ---
Hi all,
some updates...In my opinion, the kernel crashes are not related to the HDMI
port of the DLA200...I can reproduce the same kernel errors/crashes while a VGA
monitor is attached to it.
The error/crash only occurs if a monitor is started/initialized. e.g. just
connecting a DLA200 with monitors attached to USB-C doesn't produce the kernel
crash.
As soon as the monitor is initialized, e.g. by display settings of XFCE the
kernel crashes and leads to the following dmesg (here with VGA port):
[ 402.077936] ------------[ cut here ]------------
[ 402.077941] WARNING: CPU: 0 PID: 4081 at
drivers/gpu/drm/i915/intel_pm.c:3597 skl_update_other_pipe_wm+0x168/0x170()
[ 402.077942] WARN_ON(!wm_changed)
[ 402.077943] Modules linked in:
[ 402.077943] hid_roccat_koneplus hid_roccat hid_roccat_common fuse
snd_usb_audio snd_usbmidi_lib snd_rawmidi uinput uvcvideo videobuf2_vmalloc
videobuf2_memops videobuf2_v4l2 videobuf2_core v4l2_common videodev kvm_intel
kvm irqbypass
[ 402.077950] CPU: 0 PID: 4081 Comm: X Tainted: G W
4.4.0-gentoo-r1 #21
[ 402.077951] Hardware name: Dell Inc. XPS 15 9550/0N7TVV, BIOS 01.01.19
01/25/2016
[ 402.077952] ffffffff81abf5f0 ffffffff81378883 ffff8804abdab850
ffffffff810867a7
[ 402.077953] ffff8804af2d6000 ffff8804abdab8a0 ffff8804af2e7000
0000000000000000
[ 402.077954] ffff8804ae51ab78 ffffffff81086827 ffffffff81af8724
ffff880400000020
[ 402.077955] Call Trace:
[ 402.077958] [<ffffffff81378883>] ? dump_stack+0x40/0x5d
[ 402.077960] [<ffffffff810867a7>] ? warn_slowpath_common+0x77/0xb0
[ 402.077961] [<ffffffff81086827>] ? warn_slowpath_fmt+0x47/0x50
[ 402.077962] [<ffffffff81482588>] ? skl_update_other_pipe_wm+0x168/0x170
[ 402.077964] [<ffffffff8148276e>] ? skl_update_wm+0x1de/0x660
[ 402.077965] [<ffffffff814bcbb2>] ? gen9_read32+0x112/0x280
[ 402.077966] [<ffffffff814bd230>] ? gen9_write8+0x290/0x290
[ 402.077968] [<ffffffff814dfb29>] ? haswell_crtc_enable+0x369/0x880
[ 402.077969] [<ffffffff814db985>] ? intel_atomic_commit+0x365/0x1290
[ 402.077971] [<ffffffff8144b21f>] ?
drm_atomic_helper_check_planes+0x12f/0x1a0
[ 402.077972] [<ffffffff8144cffd>] ? drm_atomic_helper_set_config+0x6d/0xa0
[ 402.077974] [<ffffffff8145d749>] ? drm_mode_set_config_internal+0x59/0xf0
[ 402.077975] [<ffffffff8146152d>] ? drm_mode_setcrtc+0x17d/0x4d0
[ 402.077976] [<ffffffff814547be>] ? drm_ioctl+0x10e/0x460
[ 402.077977] [<ffffffff814613b0>] ? drm_mode_setplane+0x1b0/0x1b0
[ 402.077978] [<ffffffff8116a9e1>] ? dput+0x21/0x1f0
[ 402.077979] [<ffffffff8116750f>] ? do_vfs_ioctl+0x2bf/0x490
[ 402.077981] [<ffffffff81155ea1>] ? vfs_write+0x151/0x180
[ 402.077982] [<ffffffff81167751>] ? SyS_ioctl+0x71/0x80
[ 402.077983] [<ffffffff818b56d7>] ? entry_SYSCALL_64_fastpath+0x12/0x6a
[ 402.077984] ---[ end trace 6c5d166990af9294 ]---
[ 402.077985] ------------[ cut here ]------------
[ 402.077987] WARNING: CPU: 0 PID: 4081 at
drivers/gpu/drm/i915/intel_pm.c:3597 skl_update_other_pipe_wm+0x168/0x170()
[ 402.077987] WARN_ON(!wm_changed)
[ 402.077987] Modules linked in:
[ 402.077988] hid_roccat_koneplus hid_roccat hid_roccat_common fuse
snd_usb_audio snd_usbmidi_lib snd_rawmidi uinput uvcvideo videobuf2_vmalloc
videobuf2_memops videobuf2_v4l2 videobuf2_core v4l2_common videodev kvm_intel
kvm irqbypass
[ 402.077992] CPU: 0 PID: 4081 Comm: X Tainted: G W
4.4.0-gentoo-r1 #21
[ 402.077993] Hardware name: Dell Inc. XPS 15 9550/0N7TVV, BIOS 01.01.19
01/25/2016
[ 402.077993] ffffffff81abf5f0 ffffffff81378883 ffff8804abdab850
ffffffff810867a7
[ 402.077994] ffff8804af2e4000 ffff8804abdab8a0 ffff8804af2e7000
0000000000000000
[ 402.077995] ffff8804ae51ab78 ffffffff81086827 ffffffff81af8724
ffff880400000020
[ 402.077996] Call Trace:
[ 402.077997] [<ffffffff81378883>] ? dump_stack+0x40/0x5d
[ 402.077998] [<ffffffff810867a7>] ? warn_slowpath_common+0x77/0xb0
[ 402.077999] [<ffffffff81086827>] ? warn_slowpath_fmt+0x47/0x50
[ 402.078000] [<ffffffff81482588>] ? skl_update_other_pipe_wm+0x168/0x170
[ 402.078002] [<ffffffff8148276e>] ? skl_update_wm+0x1de/0x660
[ 402.078002] [<ffffffff814bcbb2>] ? gen9_read32+0x112/0x280
[ 402.078003] [<ffffffff814bd230>] ? gen9_write8+0x290/0x290
[ 402.078005] [<ffffffff814dfb29>] ? haswell_crtc_enable+0x369/0x880
[ 402.078006] [<ffffffff814db985>] ? intel_atomic_commit+0x365/0x1290
[ 402.078007] [<ffffffff8144b21f>] ?
drm_atomic_helper_check_planes+0x12f/0x1a0
[ 402.078008] [<ffffffff8144cffd>] ? drm_atomic_helper_set_config+0x6d/0xa0
[ 402.078010] [<ffffffff8145d749>] ? drm_mode_set_config_internal+0x59/0xf0
[ 402.078011] [<ffffffff8146152d>] ? drm_mode_setcrtc+0x17d/0x4d0
[ 402.078011] [<ffffffff814547be>] ? drm_ioctl+0x10e/0x460
[ 402.078012] [<ffffffff814613b0>] ? drm_mode_setplane+0x1b0/0x1b0
[ 402.078013] [<ffffffff8116a9e1>] ? dput+0x21/0x1f0
[ 402.078014] [<ffffffff8116750f>] ? do_vfs_ioctl+0x2bf/0x490
[ 402.078015] [<ffffffff81155ea1>] ? vfs_write+0x151/0x180
[ 402.078016] [<ffffffff81167751>] ? SyS_ioctl+0x71/0x80
[ 402.078017] [<ffffffff818b56d7>] ? entry_SYSCALL_64_fastpath+0x12/0x6a
[ 402.078017] ---[ end trace 6c5d166990af9295 ]---
[ 402.290190] [drm] GMBUS [i915 gmbus dpb] timed out, falling back to bit
banging on pin 5
[ 402.439199] [drm] GMBUS [i915 gmbus dpc] timed out, falling back to bit
banging on pin 4
The internal HDMI port of the netbook seems to work without any kernel crash.
During boot phase with attached monitors to the DLA200 the kernel crashes
immediately, cause framebuffer tries to initialize the attached monitors quite
early.
regards,
Oliver
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