[Bug 70507] New: [IVB regression FDI link train fail] DP attached 2560x1440 display goes blank

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=70507

          Priority: medium
            Bug ID: 70507
                CC: intel-gfx-bugs at lists.freedesktop.org
          Assignee: intel-gfx-bugs at lists.freedesktop.org
           Summary: [IVB regression FDI link train fail] DP attached
                    2560x1440 display goes blank
        QA Contact: intel-gfx-bugs at lists.freedesktop.org
          Severity: normal
    Classification: Unclassified
                OS: Linux (All)
          Reporter: jan.brummer at tabos.org
          Hardware: x86-64 (AMD64)
            Status: NEW
           Version: XOrg CVS
         Component: DRM/Intel
           Product: DRI

I'm using an HP 8470p notebook and a HP docking station. Attached to this
docking station is a DELL 2713HM monitor (max. resolution 2560x1440) through
display port. KMS is working fine, i can see the Fedora 20 bootlogo and the GDM
is working correctly. But as soon as the GNOME shell starts the kernel throws a
WARNING, complains about FDI train failed and the screen goes black.

[   45.575490] ------------[ cut here ]------------
[   45.575536] WARNING: CPU: 2 PID: 1025 at
drivers/gpu/drm/i915/intel_display.c:5531 ironlake_crtc_mode_set+0xd88/0xe20
[i915]()
[   45.575538] Modules linked in: fuse ebtable_nat nf_conntrack_netbios_ns
nf_conntrack_broadcast ipt_MASQUERADE ip6table_mangle ip6table_security
ip6table_raw ip6t_REJECT iptable_nat nf_nat_ipv4 iptable_mangle
iptable_security iptable_raw vboxpci(OF) vboxnetadp(OF) vboxnetflt(OF)
nf_conntrack_ipv4 nf_defrag_ipv4 xt_conntrack ebtable_filter ebtables
ip6table_filter vboxdrv(OF) ip6table_nat nf_conntrack_ipv6 nf_defrag_ipv6
nf_nat_ipv6 nf_nat nf_conntrack ip6_tables bnep snd_hda_codec_hdmi
snd_hda_codec_idt iTCO_wdt iTCO_vendor_support hp_wmi sparse_keymap ppdev btusb
bluetooth uvcvideo videobuf2_vmalloc x86_pkg_temp_thermal videobuf2_memops
coretemp videobuf2_core kvm_intel videodev media kvm crc32_pclmul crc32c_intel
ghash_clmulni_intel arc4 microcode iwldvm mac80211 snd_hda_intel joydev
snd_hda_codec
[   45.575576]  serio_raw snd_hwdep snd_seq snd_seq_device snd_pcm iwlwifi
lpc_ich mfd_core cfg80211 sdhci_pci sdhci mmc_core rfkill snd_page_alloc e1000e
snd_timer snd shpchp ptp soundcore pps_core mei_me mei wmi parport_pc tpm_tis
parport tpm_infineon tpm tpm_bios hp_accel lis3lv02d input_polldev mperf
binfmt_misc nfsd auth_rpcgss nfs_acl lockd sunrpc i915 i2c_algo_bit
drm_kms_helper firewire_ohci drm firewire_core crc_itu_t i2c_core video
[   45.575632] CPU: 2 PID: 1025 Comm: Xorg Tainted: GF        C O
3.11.4-302.fc20.x86_64 #1
[   45.575635] Hardware name: Hewlett-Packard HP EliteBook 8470p/179B, BIOS
68ICF Ver. F.43 07/16/2013
[   45.575637]  0000000000000009 ffff88020485da28 ffffffff8164818b
0000000000000000
[   45.575642]  ffff88020485da60 ffffffff8106715d ffff8802306b8000
ffff880232af5000
[   45.575647]  ffff88023043bc70 ffff8802306b8000 00000000c4010001
ffff88020485da70
[   45.575652] Call Trace:
[   45.575660]  [<ffffffff8164818b>] dump_stack+0x45/0x56
[   45.575676]  [<ffffffff8106715d>] warn_slowpath_common+0x7d/0xa0
[   45.575683]  [<ffffffff8106723a>] warn_slowpath_null+0x1a/0x20
[   45.575711]  [<ffffffffa00c9308>] ironlake_crtc_mode_set+0xd88/0xe20 [i915]
[   45.575741]  [<ffffffffa00ca5f0>] __intel_set_mode+0x5b0/0x12e0 [i915]
[   45.575881]  [<ffffffffa00cd3d6>] intel_set_mode+0x16/0x30 [i915]
[   45.575907]  [<ffffffffa00cdc32>] intel_crtc_set_config+0x742/0x920 [i915]
[   45.575932]  [<ffffffffa0043a6d>] drm_mode_set_config_internal+0x5d/0xe0
[drm]
[   45.575953]  [<ffffffffa0046447>] drm_mode_setcrtc+0xf7/0x650 [drm]
[   45.575979]  [<ffffffffa00c2a82>] ? intel_crtc_load_lut+0xd2/0x170 [i915]
[   45.575999]  [<ffffffffa0037142>] drm_ioctl+0x532/0x660 [drm]
[   45.576013]  [<ffffffff811b9dfd>] do_vfs_ioctl+0x2dd/0x4b0
[   45.576018]  [<ffffffff811ba051>] SyS_ioctl+0x81/0xa0
[   45.576024]  [<ffffffff81657359>] system_call_fastpath+0x16/0x1b
[   45.576027] ---[ end trace fd1712f0cf9ed9ea ]---


It can only be resurrected if i try to switch the primary monitor to secondary
and back. Then the screen wakes up again and is working fine. This worked fine
with the Fedora 19 live stick (Kernel 3.9).

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