[Bug 107213] [amdgpu/DisplayPort] KDE Wayland session is segfaulting right after login

[Bug 107213] [amdgpu/DisplayPort] KDE Wayland session is segfaulting right after login

[bugzilla-daemon]

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https://bugs.freedesktop.org/show_bug.cgi?id=107213

            Bug ID: 107213
           Summary: [amdgpu/DisplayPort] KDE Wayland session is
                    segfaulting right after login
           Product: DRI
           Version: unspecified
          Hardware: x86-64 (AMD64)
                OS: Linux (All)
            Status: NEW
          Severity: normal
          Priority: medium
         Component: DRM/AMDgpu
          Assignee: dri-devel@lists.freedesktop.org
          Reporter: shtetldik@gmail.com

I just tried to use a Wayland session with KDE Plasma 5.13.2 (Debian testing)
and it's segfaulting right after login and falling back to sddm.

That's what I see in dmesg:

[  176.359816] [drm:generic_reg_wait [amdgpu]] *ERROR* REG_WAIT timeout 10us *
3000 tries - dce110_stream_encoder_dp_blank line:956
[  176.814144] QThread[2620]: segfault at f ip 00007f30f30b0e60 sp
00007f30e506e4f0 error 4 in libwayland-client.so.0.3.0[7f30f30a9000+d000]

Not sure whether it's amdgpu problem of something with KWin.

GPU: AMD Vega 56, connected over DisplayPort.

OpenGL renderer string: Radeon RX Vega (VEGA10, DRM 3.25.0, 4.17.0-1-amd64,
LLVM 6.0.1)
OpenGL core profile version string: 4.5 (Core Profile) Mesa 18.1.3

Corresponding KDE bug: https://bugs.kde.org/show_bug.cgi?id=396066

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[Bug 107213] [amdgpu/DisplayPort] KDE Wayland session is segfaulting right after login

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https://bugs.freedesktop.org/show_bug.cgi?id=107213

Michel Dänzer <michel@daenzer.net> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |harry.wentland@amd.com

--- Comment #1 from Michel Dänzer <michel@daenzer.net> ---
Please attach the full dmesg.

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[Bug 107213] [amdgpu/DisplayPort] KDE Wayland session is segfaulting right after login

[bugzilla-daemon]

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https://bugs.freedesktop.org/show_bug.cgi?id=107213

--- Comment #2 from Shmerl <shtetldik@gmail.com> ---
Created attachment 140624
  --> https://bugs.freedesktop.org/attachment.cgi?id=140624&action=edit
dmesg output

See attached dmesg output. Once thing to note, I consistently get a black
screen after boot (the monitor goes into a sleep mode). I need to turn monitor
off, turn it back on, switch to tty1 (then monitor turns on), then log in there
and restart sddm. Only then sddm appears on tty7. After that, Wayland session
log-in fails (I tried a couple of times which is reflected in dmesg).

First try didn't result in segfault in dmesg, just in *ERROR* REG_WAIT, but
second attempt also added as segfault.

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[Bug 107213] [amdgpu/DisplayPort] KDE Wayland session is segfaulting right after login

[bugzilla-daemon]

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https://bugs.freedesktop.org/show_bug.cgi?id=107213

--- Comment #3 from Shmerl <shtetldik@gmail.com> ---
Did anyone manage to narrow down the cause?

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[Bug 107213] [amdgpu/DisplayPort] KDE Wayland session is segfaulting right after login

[bugzilla-daemon]

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https://bugs.freedesktop.org/show_bug.cgi?id=107213

--- Comment #4 from Shmerl <shtetldik@gmail.com> ---
Still a problem with kernel 4.18.5 and latest firmware for Vega (20180825).

Except now, the session doesn't crash but just hangs with black screen.

Similar dmesg can be seen:

[  162.743804] [drm:generic_reg_wait [amdgpu]] *ERROR* REG_WAIT timeout 10us *
3500 tries - dce_mi_free_dmif line:636
[  162.743830] WARNING: CPU: 6 PID: 1575 at
/build/linux-ETX4PU/linux-4.18.5/drivers/gpu/drm/amd/amdgpu/../display/dc/dc_helper.c:254
generic_reg_wait+0xe8/0x160 [amdgpu]

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[Bug 107213] [amdgpu/DisplayPort] KDE Wayland session is segfaulting right after login

[bugzilla-daemon]

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https://bugs.freedesktop.org/show_bug.cgi?id=107213

--- Comment #5 from george <george@rylos.net> ---
Hello, found this bug via web search. I am experiencing the *exact* same bug.
I'm running Fedora 28 with MATE desktop, so I'm confident this is not a KDE
problem.

My error message:
[39911.150851] [drm:generic_reg_wait [amdgpu]] *ERROR* REG_WAIT timeout 10us *
3000 tries - dce110_stream_encoder_dp_blank line:956
[39911.150927] WARNING: CPU: 5 PID: 1452 at
drivers/gpu/drm/amd/amdgpu/../display/dc/dc_helper.c:195
generic_reg_wait+0xe7/0x160 [amdgpu]

Mobo: Supermicro X9SRL
CPU: intel Xeon E5 2680 v2
GPU: MSI Radeon RX 480 4GB with latest polaris10 bin file
Kernel: 4.17.19
Mesa: 18.0.5

This must be an AMDGPU driver bug. I'm also connected via DisplayPort and I
frequently get the monitor sleeping to powersave mode during boot. If I switch
to TTY1 and do a Ctrl-Alt-Del reboot, it usually boots up normally after the
blind "three finger salute" reboot.

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[Bug 107213] [amdgpu/DisplayPort] KDE Wayland session is segfaulting right after login

[bugzilla-daemon]

[-- Attachment #1.1: Type: text/plain, Size: 314 bytes --]

https://bugs.freedesktop.org/show_bug.cgi?id=107213

--- Comment #6 from george <george@rylos.net> ---
Created attachment 141418
  --> https://bugs.freedesktop.org/attachment.cgi?id=141418&action=edit
amdgpu crash in dmesg output

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[Bug 107213] [amdgpu/DisplayPort] KDE Wayland session is segfaulting right after login

[bugzilla-daemon]

[-- Attachment #1.1: Type: text/plain, Size: 444 bytes --]

https://bugs.freedesktop.org/show_bug.cgi?id=107213

--- Comment #7 from Shmerl <shtetldik@gmail.com> ---
I'm waiting for kernel 4.19.x to see if it improves anything, since it
apparently had some fix that looks related:

https://lists.freedesktop.org/archives/dri-devel/2018-August/185123.html

> drm/amd/display: Fix Vega10 black screen after mode change

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[Bug 107213] [amdgpu/DisplayPort] KDE Wayland session is segfaulting right after login

[bugzilla-daemon]

[-- Attachment #1.1: Type: text/plain, Size: 529 bytes --]

https://bugs.freedesktop.org/show_bug.cgi?id=107213

--- Comment #8 from Pau Ruiz Safont <pr.safont@gmail.com> ---
Same issue here, with the same error on dmesg:

GPU: R9 380 connected over Displayport
Monitor: DELL U2515H
CPU: AMD Ryzen 7 1700
Motherboard: ASRock AB350 Gaming-ITX/ac

OpenGL Renderer: AMD Radeon R9 380 Series (TONGA DRM 3.26.0 4.18.5-1-MANJARO
LLVM 6.0.1)
OpenGL version: 4.5 Mesa 18.1.7

I'm using KDE Plasma 5.13.4

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Re: [Bug 107213] [amdgpu/DisplayPort] KDE Wayland session is segfaulting right after login

[sylvain.bertrand]

May be related to (if your kernel have the same faulty commit):
https://bugs.freedesktop.org/show_bug.cgi?id=107784
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[Bug 107213] [amdgpu/DisplayPort] KDE Wayland session is segfaulting right after login

[bugzilla-daemon]

[-- Attachment #1.1: Type: text/plain, Size: 316 bytes --]

https://bugs.freedesktop.org/show_bug.cgi?id=107213

--- Comment #9 from Pau Ruiz Safont <pr.safont@gmail.com> ---
Created attachment 141438
  --> https://bugs.freedesktop.org/attachment.cgi?id=141438&action=edit
dmesg crash output

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[Bug 107213] [amdgpu/DisplayPort] KDE Wayland session is segfaulting right after login

[bugzilla-daemon]

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https://bugs.freedesktop.org/show_bug.cgi?id=107213

--- Comment #10 from Sylvain BERTRAND <sylvain.bertrand@gmail.com> ---
May be related to (if your kernel have the same faulty commit):
https://bugs.freedesktop.org/show_bug.cgi?id=107784

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[Bug 107213] [amdgpu/DisplayPort] KDE Wayland session is segfaulting right after login

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https://bugs.freedesktop.org/show_bug.cgi?id=107213

--- Comment #11 from Nicholas Kazlauskas <nicholas.kazlauskas@amd.com> ---
I'm inclined to believe that is a userspace issue.

I can observe the crash happening on the newest stable Ubuntu/Debian releases.
However, the crash does *not* occur for distributions that have newer userspace
and kernel configurations (Fedora, Arch). I can boot and use Wayland under this
ASIC and many others.

That said, I haven't done investigation into the root cause of the issue. Might
be worth looking into a bisection on Wayland or the kernel. It shouldn't be
specific to a particular ASIC at least.

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Re: [Bug 107213] [amdgpu/DisplayPort] KDE Wayland session is segfaulting right after login

[sylvain.bertrand]

May be different then, because my bug
https://bugs.freedesktop.org/show_bug.cgi?id=107784 is with git userspace no
older than a few days, and displayport is broken whatever the screen resolution.
I did manually bisect the kernel and found the faulty commit though, I guess
the guys in amd are now looking into it.
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[Bug 107213] [amdgpu/DisplayPort] KDE Wayland session is segfaulting right after login

[bugzilla-daemon]

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https://bugs.freedesktop.org/show_bug.cgi?id=107213

--- Comment #12 from Sylvain BERTRAND <sylvain.bertrand@gmail.com> ---
May be different then, because my bug
https://bugs.freedesktop.org/show_bug.cgi?id=107784 is with git userspace no
older than a few days, and displayport is broken whatever the screen
resolution.
I did manually bisect the kernel and found the faulty commit though, I guess
the guys in amd are now looking into it.

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[Bug 107213] [amdgpu/DisplayPort] KDE Wayland session is segfaulting right after login

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https://bugs.freedesktop.org/show_bug.cgi?id=107213

--- Comment #13 from Shmerl <shtetldik@gmail.com> ---
I have a recent kernel and userland stack with Debian testing, it's still
crashing and falling back into sddm. But with newest kernel I don't see the
segfault message in dmesg anymore.

Linux 4.19.0-rc2-amd64 #1 SMP Debian 4.19~rc2-1~exp1 (2018-09-03) x86_64
GNU/Linux

firmware-amd-graphics: 20180825+dfsg-1

I see this in dmesg:

[   21.111724] [drm:generic_reg_wait [amdgpu]] *ERROR* REG_WAIT timeout 10us *
3000 tries - dce110_stream_encoder_dp_blank line:922
[   21.111795] WARNING: CPU: 6 PID: 153 at
drivers/gpu/drm/amd/amdgpu/../display/dc/dc_helper.c:254
generic_reg_wait+0xe7/0x160 [amdgpu]
[   21.111796] Modules linked in: devlink(E) ebtable_filter(E) ebtables(E)
ip6table_filter(E) ip6_tables(E) iptable_filter(E) cmac(E) bnep(E) nls_ascii(E)
nls_cp437(E) vfat(E) fat(E) arc4(E) amdkfd(E) snd_hda_codec_realtek(E)
snd_hda_codec_generic(E) uvcvideo(E) edac_mce_amd(E) btusb(E)
snd_hda_codec_hdmi(E) btrtl(E) mxm_wmi(E) wmi_bmof(E) videobuf2_vmalloc(E)
btbcm(E) btintel(E) amdgpu(E) kvm_amd(E) videobuf2_memops(E) iwlmvm(E)
bluetooth(E) snd_hda_intel(E) chash(E) videobuf2_v4l2(E) kvm(E) irqbypass(E)
snd_usb_audio(E) gpu_sched(E) snd_hda_codec(E) mac80211(E) snd_usbmidi_lib(E)
videobuf2_common(E) snd_hda_core(E) crct10dif_pclmul(E) jitterentropy_rng(E)
crc32_pclmul(E) ttm(E) snd_rawmidi(E) snd_seq_device(E) snd_hwdep(E)
efi_pstore(E) videodev(E) evdev(E) drm_kms_helper(E) ghash_clmulni_intel(E)
[   21.111824]  snd_pcm(E) iwlwifi(E) pcspkr(E) drbg(E) efivars(E) media(E)
drm(E) ansi_cprng(E) snd_timer(E) cfg80211(E) ecdh_generic(E) snd(E)
soundcore(E) rfkill(E) sp5100_tco(E) crc16(E) k10temp(E) ccp(E) rng_core(E)
sg(E) wmi(E) pcc_cpufreq(E) button(E) acpi_cpufreq(E) nct6775(E) hwmon_vid(E)
parport_pc(E) ppdev(E) lp(E) parport(E) efivarfs(E) ip_tables(E) x_tables(E)
autofs4(E) xfs(E) btrfs(E) xor(E) zstd_decompress(E) zstd_compress(E) xxhash(E)
raid6_pq(E) libcrc32c(E) crc32c_generic(E) hid_generic(E) usbhid(E) hid(E)
sd_mod(E) crc32c_intel(E) ahci(E) xhci_pci(E) aesni_intel(E) aes_x86_64(E)
libahci(E) crypto_simd(E) xhci_hcd(E) igb(E) cryptd(E) glue_helper(E) libata(E)
i2c_piix4(E) nvme(E) i2c_algo_bit(E) dca(E) usbcore(E) scsi_mod(E)
usb_common(E) nvme_core(E) gpio_amdpt(E) gpio_generic(E)
[   21.111860] CPU: 6 PID: 153 Comm: kworker/6:3 Tainted: G            E    
4.19.0-rc2-amd64 #1 Debian 4.19~rc2-1~exp1
[   21.111861] Hardware name: To Be Filled By O.E.M. To Be Filled By
O.E.M./X370 Taichi, BIOS L4.64 04/03/2018
[   21.111877] Workqueue: events drm_mode_rmfb_work_fn [drm]
[   21.111931] RIP: 0010:generic_reg_wait+0xe7/0x160 [amdgpu]
[   21.111932] Code: 44 24 58 8b 54 24 48 89 de 44 89 4c 24 08 48 8b 4c 24 50
48 c7 c7 20 dd 1e c2 e8 64 76 ab fe 83 7d 18 01 44 8b 4c 24 08 74 02 <0f> 0b 48
83 c4 10 44 89 c8 5b 5d 41 5c 41 5d 41 5e 41 5f c3 41 0f
[   21.111933] RSP: 0018:ffffaf830207fa20 EFLAGS: 00010297
[   21.111935] RAX: 0000000000000000 RBX: 000000000000000a RCX:
0000000000000000
[   21.111936] RDX: 0000000000000000 RSI: ffff96dcceb966a8 RDI:
ffff96dcceb966a8
[   21.111937] RBP: ffff96dcc61f1700 R08: 0000000000000005 R09:
0000000000010200
[   21.111938] R10: 0000000000000498 R11: ffffffff9a1dc6ed R12:
0000000000000bb9
[   21.111938] R13: 00000000000051e2 R14: 0000000000010000 R15:
0000000000000000
[   21.111940] FS:  0000000000000000(0000) GS:ffff96dcceb80000(0000)
knlGS:0000000000000000
[   21.111941] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   21.111942] CR2: 000055ab41a08358 CR3: 00000003f4b52000 CR4:
00000000003406e0
[   21.111943] Call Trace:
[   21.112005]  dce110_stream_encoder_dp_blank+0x12c/0x1a0 [amdgpu]
[   21.112061]  core_link_disable_stream+0x54/0x220 [amdgpu]
[   21.112116]  dce110_reset_hw_ctx_wrap+0xc1/0x1e0 [amdgpu]
[   21.112170]  dce110_apply_ctx_to_hw+0x45/0x650 [amdgpu]
[   21.112224]  ? dc_remove_plane_from_context+0x1fc/0x240 [amdgpu]
[   21.112276]  dc_commit_state+0x2c6/0x520 [amdgpu]
[   21.112334]  amdgpu_dm_atomic_commit_tail+0x37a/0xd80 [amdgpu]
[   21.112338]  ? __wake_up_common_lock+0x89/0xc0
[   21.112341]  ? _cond_resched+0x15/0x30
[   21.112342]  ? wait_for_completion_timeout+0x3b/0x1a0
[   21.112399]  ? amdgpu_dm_atomic_commit_tail+0xd80/0xd80 [amdgpu]
[   21.112407]  commit_tail+0x3d/0x70 [drm_kms_helper]
[   21.112414]  drm_atomic_helper_commit+0xb4/0x120 [drm_kms_helper]
[   21.112428]  drm_framebuffer_remove+0x361/0x410 [drm]
[   21.112442]  drm_mode_rmfb_work_fn+0x4f/0x60 [drm]
[   21.112446]  process_one_work+0x1a7/0x360
[   21.112447]  worker_thread+0x30/0x390
[   21.112449]  ? pwq_unbound_release_workfn+0xd0/0xd0
[   21.112451]  kthread+0x112/0x130
[   21.112452]  ? kthread_bind+0x30/0x30
[   21.112454]  ret_from_fork+0x22/0x40
[   21.112456] ---[ end trace b22dbbbbffd241d9 ]---

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[Bug 107213] [amdgpu/DisplayPort] KDE Wayland session is segfaulting right after login

[bugzilla-daemon]

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https://bugs.freedesktop.org/show_bug.cgi?id=107213

--- Comment #14 from Shmerl <shtetldik@gmail.com> ---
Correction, segfault is still happening, it's just not consistent (not every
time).

[  683.792530] QThread[3520]: segfault at f ip 00007f41f9f2ae60 sp
00007f41f19d4500 error 4 in libwayland-client.so.0.3.0[7f41f9f23000+d000]
[  683.792538] Code: 48 83 c4 10 5b c3 e8 cf d1 ff ff 0f 1f 44 00 00 66 2e 0f
1f 84 00 00 00 00 00 41 55 41 54 49 89 cc 55 53 48 89 fb 48 83 ec 08 <48> 8b 7f
08 44 0f b6 07 45 84 c0 0f 84 17 01 00 00 48 89 f8 44 89

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[Bug 107213] [amdgpu/DisplayPort] KDE Wayland session is segfaulting right after login

[bugzilla-daemon]

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https://bugs.freedesktop.org/show_bug.cgi?id=107213

--- Comment #15 from Shmerl <shtetldik@gmail.com> ---
I managed to make it produce a core. It's from kwin_wayland. After installing
needed debug symbol packages, here is a backtrace:

Core was generated by `/usr/bin/kwin_wayland --xwayland --libinput
--exit-with-session=/usr/lib/x86_64'.
Program terminated with signal SIGSEGV, Segmentation fault.
#0  0x00007eff59760f30 in wl_closure_init (message=message@entry=0x7,
size=size@entry=52, num_arrays=num_arrays@entry=0x7eff5140858c,
args=args@entry=0x0) at ../src/connection.c:562
562     ../src/connection.c: No such file or directory.
[Current thread is 1 (Thread 0x7eff51409700 (LWP 7249))]
(gdb) bt
#0  0x00007eff59760f30 in wl_closure_init (message=message@entry=0x7,
size=size@entry=52, num_arrays=num_arrays@entry=0x7eff5140858c,
args=args@entry=0x0) at ../src/connection.c:562
#1  0x00007eff59761aa0 in wl_connection_demarshal (connection=0x7eff440053e0,
size=size@entry=52, objects=objects@entry=0x7eff440052e8, message=0x7) at
../src/connection.c:698
#2  0x00007eff5975fae8 in queue_event (len=52, display=0x7eff44005270) at
../src/wayland-client.c:1364
#3  read_events (display=0x7eff44005270) at ../src/wayland-client.c:1466
#4  wl_display_read_events (display=display@entry=0x7eff44005270) at
../src/wayland-client.c:1549
#5  0x00007eff59760169 in wl_display_dispatch_queue (display=0x7eff44005270,
queue=0x7eff44005338) at ../src/wayland-client.c:1788
#6  0x00007eff5d123933 in
KWayland::Client::ConnectionThread::Private::<lambda()>::operator()
(__closure=0x7eff44009550) at ./src/client/connection_thread.cpp:129
#7  QtPrivate::FunctorCall<QtPrivate::IndexesList<>, QtPrivate::List<>, void,
KWayland::Client::ConnectionThread::Private::setupSocketNotifier()::<lambda()>
>::call (arg=<optimized out>, 
    f=...) at /usr/include/x86_64-linux-gnu/qt5/QtCore/qobjectdefs_impl.h:128
#8 
QtPrivate::Functor<KWayland::Client::ConnectionThread::Private::setupSocketNotifier()::<lambda()>,
0>::call<QtPrivate::List<>, void> (arg=<optimized out>, f=...)
    at /usr/include/x86_64-linux-gnu/qt5/QtCore/qobjectdefs_impl.h:238
#9 
QtPrivate::QFunctorSlotObject<KWayland::Client::ConnectionThread::Private::setupSocketNotifier()::<lambda()>,
0, QtPrivate::List<>, void>::impl(int, QtPrivate::QSlotObjectBase *, QObject *,
void **, bool *) (which=<optimized out>, this_=0x7eff44009540, r=<optimized
out>, a=<optimized out>, ret=<optimized out>)
    at /usr/include/x86_64-linux-gnu/qt5/QtCore/qobjectdefs_impl.h:421
#10 0x00007eff5e606910 in QtPrivate::QSlotObjectBase::call (a=0x7eff514087d0,
r=0x564a80be84f0, this=0x7eff44009540) at
../../include/QtCore/../../src/corelib/kernel/qobjectdefs_impl.h:376
#11 QMetaObject::activate(QObject*, int, int, void**) () at
kernel/qobject.cpp:3754
#12 0x00007eff5e606dd7 in QMetaObject::activate
(sender=sender@entry=0x7eff44009440, m=m@entry=0x7eff5e863c60
<QSocketNotifier::staticMetaObject>, 
    local_signal_index=local_signal_index@entry=0,
argv=argv@entry=0x7eff514087d0) at kernel/qobject.cpp:3633
#13 0x00007eff5e611ff9 in QSocketNotifier::activated
(this=this@entry=0x7eff44009440, _t1=<optimized out>, _t2=...) at
.moc/moc_qsocketnotifier.cpp:136
#14 0x00007eff5e612341 in QSocketNotifier::event (this=0x7eff44009440,
e=0x7eff51408a30) at kernel/qsocketnotifier.cpp:266
#15 0x00007eff5e9cb4a1 in QApplicationPrivate::notify_helper(QObject*, QEvent*)
() from /lib/x86_64-linux-gnu/libQt5Widgets.so.5
#16 0x00007eff5e9d2ae0 in QApplication::notify(QObject*, QEvent*) () from
/lib/x86_64-linux-gnu/libQt5Widgets.so.5
#17 0x00007eff5e5dd579 in QCoreApplication::notifyInternal2(QObject*, QEvent*)
() at
../../include/QtCore/5.11.1/QtCore/private/../../../../../src/corelib/thread/qthread_p.h:307
#18 0x00007eff5e62fe4a in QCoreApplication::sendEvent (event=0x7eff51408a30,
receiver=<optimized out>) at
../../include/QtCore/../../src/corelib/kernel/qcoreapplication.h:234
#19 socketNotifierSourceDispatch(_GSource*, int (*)(void*), void*) () at
kernel/qeventdispatcher_glib.cpp:106
#20 0x00007eff5a647287 in g_main_context_dispatch () from
/lib/x86_64-linux-gnu/libglib-2.0.so.0
#21 0x00007eff5a6474c0 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#22 0x00007eff5a64754c in g_main_context_iteration () from
/lib/x86_64-linux-gnu/libglib-2.0.so.0
#23 0x00007eff5e62f223 in QEventDispatcherGlib::processEvents
(this=0x7eff44000b20, flags=...) at kernel/qeventdispatcher_glib.cpp:423
#24 0x00007eff5e5dc24b in
QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at
../../include/QtCore/../../src/corelib/global/qflags.h:140
#25 0x00007eff5e42b176 in QThread::exec() () at
../../include/QtCore/../../src/corelib/global/qflags.h:120
#26 0x00007eff5e434d47 in QThreadPrivate::start(void*) () at
thread/qthread_unix.cpp:367
#27 0x00007eff5efb5f2a in start_thread (arg=0x7eff51409700) at
pthread_create.c:463
#28 0x00007eff5e0fdedf in clone () at
../sysdeps/unix/sysv/linux/x86_64/clone.S:95

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[Bug 107213] [amdgpu/DisplayPort] KDE Wayland session is segfaulting right after login

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https://bugs.freedesktop.org/show_bug.cgi?id=107213

--- Comment #16 from Michel Dänzer <michel@daenzer.net> ---
kwin crashes in libwayland code. You should probably report this to libwayland
(uses Gitlab issues now) and/or kwin.

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[Bug 107213] [amdgpu/DisplayPort] KDE Wayland session is segfaulting right after login

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https://bugs.freedesktop.org/show_bug.cgi?id=107213

--- Comment #17 from Shmerl <shtetldik@gmail.com> ---
Thanks. I already reported it for KWin (linked above):
https://bugs.kde.org/show_bug.cgi?id=396066

I'll open libwayland bug too.

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[Bug 107213] [amdgpu/DisplayPort] KDE Wayland session is segfaulting right after login

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https://bugs.freedesktop.org/show_bug.cgi?id=107213

--- Comment #18 from Shmerl <shtetldik@gmail.com> ---
Corresponding wayland-client bug:
https://gitlab.freedesktop.org/wayland/wayland/issues/56

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[Bug 107213] [amdgpu/DisplayPort] KDE Wayland session is segfaulting right after login

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https://bugs.freedesktop.org/show_bug.cgi?id=107213

Lee Donaghy <lee295012@gmail.com> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |lee295012@gmail.com

--- Comment #19 from Lee Donaghy <lee295012@gmail.com> ---
Created attachment 141650
  --> https://bugs.freedesktop.org/attachment.cgi?id=141650&action=edit
dmesg error msg while suspending.

Found this bug report from a google search, i'm not using wayland and the
machine appears to have suspended and resumed fine but i did happen to see the
same error in the logs.
posting in case it help narrow down the problem.


System:    Host: Plasma Kernel: 4.18.8-arch1-1-ARCH x86_64 bits: 64 Desktop:
KDE Plasma 5.13.5 
           Distro: Antergos Linux 
CPU:       Topology: 6-Core model: Intel Core i7-5820K bits: 64 type: MT MCP L2
cache: 15.0 MiB 
           Speed: 2697 MHz min/max: 1200/3600 MHz Core speeds (MHz): 1: 2292 2:
1949 3: 2333 
           4: 2576 5: 2371 6: 3401 7: 2804 8: 2979 9: 2767 10: 2782 11: 3069
12: 3402 
Graphics:  Card-1: AMD Vega 10 XT [Radeon RX Vega 64] driver: amdgpu v: kernel 
           Display: x11 server: X.Org 1.20.1 driver: modesetting unloaded:
fbdev,vesa 
           resolution: 2560x1440~144Hz, 1280x720~60Hz 
           OpenGL: renderer: Radeon RX Vega (VEGA10 DRM 3.26.0
4.18.8-arch1-1-ARCH LLVM 6.0.1) 
           v: 4.5 Mesa 18.2.0

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[Bug 107213] [amdgpu/DisplayPort] KDE Wayland session is segfaulting right after login

[bugzilla-daemon]

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https://bugs.freedesktop.org/show_bug.cgi?id=107213

--- Comment #20 from Shmerl <shtetldik@gmail.com> ---
I also opened downstream Debian bug:
https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=909636

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[Bug 107213] [amdgpu/DisplayPort] KDE Wayland session is segfaulting right after login

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https://bugs.freedesktop.org/show_bug.cgi?id=107213

--- Comment #21 from Shmerl <shtetldik@gmail.com> ---
I tested it with Intel GPU recently, and it doesn't crash. So it's amdgpu
specific.

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[Bug 107213] [amdgpu/DisplayPort] KDE Wayland session is segfaulting right after login

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https://bugs.freedesktop.org/show_bug.cgi?id=107213

--- Comment #22 from Shmerl <shtetldik@gmail.com> ---
It looks like it's related to
https://bugs.freedesktop.org/show_bug.cgi?id=107978

My monitor (Dell U2413) has a setting for toggling DisplayPort 1.2. When I
disable it, Wayland Plasma session isn't crashing anymore and is logging in
properly! So it's likely an amdgpu issue actually.

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[Bug 107213] [amdgpu/DisplayPort] KDE Wayland session is segfaulting right after login

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https://bugs.freedesktop.org/show_bug.cgi?id=107213

Martin Peres <martin.peres@free.fr> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
         Resolution|---                         |MOVED
             Status|NEW                         |RESOLVED

--- Comment #23 from Martin Peres <martin.peres@free.fr> ---
-- GitLab Migration Automatic Message --

This bug has been migrated to freedesktop.org's GitLab instance and has been
closed from further activity.

You can subscribe and participate further through the new bug through this link
to our GitLab instance: https://gitlab.freedesktop.org/drm/amd/issues/445.

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