[Bug 80532] [BYT] internal display unusable if second display is connected, port not ready error

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=80532

fcbug at arcor.de changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|RESOLVED                    |REOPENED
         Resolution|FIXED                       |---

--- Comment #9 from fcbug at arcor.de ---
This bug exists in kernel 3.18.3 also.

kernel:
kernel.x86_64 3.18.3-201.fc21 @updates-testing

dmesg:
[   60.337544] [drm:intel_dp_start_link_train] *ERROR* too many full retries,
give up
[   63.109500] [drm:intel_dp_start_link_train] *ERROR* too many full retries,
give up
[   65.988684] [drm:intel_dp_start_link_train] *ERROR* too many full retries,
give up
[   68.719966] [drm:intel_dp_start_link_train] *ERROR* too many full retries,
give up
[   71.352646] [drm:intel_dp_start_link_train] *ERROR* too many full retries,
give up
[   73.834707] [drm:intel_dp_start_link_train] *ERROR* too many full retries,
give up
[   76.362210] [drm:intel_dp_start_link_train] *ERROR* too many full retries,
give up
[   76.386590] [drm:intel_dp_complete_link_train] *ERROR* failed to train DP,
aborting
[   77.414982] ------------[ cut here ]------------
[   77.415146] WARNING: CPU: 1 PID: 1182 at
drivers/gpu/drm/i915/intel_display.c:1797 vlv_wait_port_ready+0x12e/0x170
[i915]()
[   77.415159] timed out waiting for port C ready: 0x0000001f
[   77.415167] Modules linked in: nf_conntrack_netbios_ns
nf_conntrack_broadcast ip6t_rpfilter ip6t_REJECT nf_reject_ipv6 xt_conntrack
ebtable_nat ebtable_broute bridge stp llc ebtable_filter ebtables ip6table_nat
nf_conntrack_ipv6 nf_defrag_ipv6 nf_nat_ipv6 ip6table_mangle ip6table_security
ip6table_raw ip6table_filter ip6_tables iptable_nat nf_conntrack_ipv4
nf_defrag_ipv4 nf_nat_ipv4 nf_nat nf_conntrack iptable_mangle iptable_security
iptable_raw vfat fat fuse rc_dib0700_rc5 dib7000p mxl5005s af9013
dvb_usb_dib0700 dib7000m dib0090 dib0070 dib3000mc dvb_usb_af9015
dibx000_common dvb_usb_v2 dvb_usb dvb_core rc_core intel_rapl coretemp uvcvideo
kvm_intel videobuf2_vmalloc kvm videobuf2_core videobuf2_memops v4l2_common
arc4 ath9k videodev crct10dif_pclmul crc32_pclmul crc32c_intel ath9k_common
ghash_clmulni_intel
[   77.415382]  media ath9k_hw ath mac80211 snd_hda_codec_hdmi
snd_hda_codec_realtek snd_hda_codec_generic snd_hda_intel asus_nb_wmi cfg80211
snd_hda_controller iTCO_wdt asus_wmi iTCO_vendor_support sparse_keymap
snd_hda_codec rtsx_pci_ms memstick serio_raw snd_hwdep snd_seq snd_seq_device
snd_pcm wmi i2c_hid i2c_designware_platform dw_dmac snd_timer dw_dmac_core snd
i2c_designware_core mei_txe rfkill_gpio mei shpchp soundcore lpc_ich rfkill
i2c_i801 iosf_mbi nfsd auth_rpcgss nfs_acl lockd grace binfmt_misc sunrpc i915
rtsx_pci_sdmmc i2c_algo_bit drm_kms_helper uas rtsx_pci drm r8169 mfd_core
usb_storage mii sdhci_acpi video sdhci mmc_core
[   77.415588] CPU: 1 PID: 1182 Comm: Xorg.bin Not tainted
3.18.3-201.fc21.x86_64 #1
[   77.415599] Hardware name: ASUSTeK COMPUTER INC. X200MA/X200MA, BIOS
X200MA.302 01/21/2014
[   77.415609]  0000000000000000 000000002d2fdab9 ffff8800a3107958
ffffffff8175da66
[   77.415629]  0000000000000000 ffff8800a31079b0 ffff8800a3107998
ffffffff81099181
[   77.415646]  0000000000000000 ffff88003ff80000 0000000000186014
00000000000000f0
[   77.415665] Call Trace:
[   77.415691]  [<ffffffff8175da66>] dump_stack+0x46/0x58
[   77.415715]  [<ffffffff81099181>] warn_slowpath_common+0x81/0xa0
[   77.415735]  [<ffffffff810991f5>] warn_slowpath_fmt+0x55/0x70
[   77.415933]  [<ffffffffa01698fe>] vlv_wait_port_ready+0x12e/0x170 [i915]
[   77.416063]  [<ffffffffa01917ab>] vlv_pre_enable_dp+0xeb/0x150 [i915]
[   77.416093]  [<ffffffff8139c3db>] ? delay_tsc+0x3b/0x70
[   77.416216]  [<ffffffffa01704ab>] valleyview_crtc_enable+0x7ab/0xde0 [i915]
[   77.416323]  [<ffffffffa0138df9>] ? i915_gem_object_get_fence+0x229/0x2f0
[i915]
[   77.416425]  [<ffffffffa0133e12>] ?
i915_gem_object_unpin_from_display_plane+0x12/0x70 [i915]
[   77.416547]  [<ffffffffa016ceda>] __intel_set_mode+0x88a/0x16f0 [i915]
[   77.416671]  [<ffffffffa0175c36>] intel_set_mode+0x16/0x30 [i915]
[   77.416801]  [<ffffffffa0176dda>] intel_crtc_set_config+0xa9a/0xea0 [i915]
[   77.416928]  [<ffffffffa00a4228>] ? drm_modeset_lock+0x78/0x110 [drm]
[   77.417004]  [<ffffffffa0094e30>] drm_mode_set_config_internal+0x60/0xf0
[drm]
[   77.417082]  [<ffffffffa00995e6>] drm_mode_setcrtc+0x2b6/0x5d0 [drm]
[   77.417149]  [<ffffffffa008aaaf>] drm_ioctl+0x1df/0x680 [drm]
[   77.417184]  [<ffffffff81229fa0>] do_vfs_ioctl+0x2d0/0x4b0
[   77.417203]  [<ffffffff8122a201>] SyS_ioctl+0x81/0xa0
[   77.417233]  [<ffffffff817647a9>] system_call_fastpath+0x12/0x17
[   77.417246] ---[ end trace 4399a177f201c728 ]---

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