[Bug 51983] [ivb DVI fdi link train fail] Multiple Displays not working on Core i7 3770S

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=51983

Rodney Dawes <dobey.pwns at gmail.com> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|NEEDINFO                    |NEW

--- Comment #18 from Rodney Dawes <dobey.pwns at gmail.com> ---
With the two mentioned patches, and the Ubuntu Raring 3.8.0-16.26 kernel, I am
no longer seeing the link train errors in dmesg when trying to use the second
display. Instead, I am now getting a lot of traces in dmesg, all very similar
to this one:

[  506.787670] ------------[ cut here ]------------
[  506.787700] WARNING: at
/tmp/buildd/linux-3.8.0/drivers/gpu/drm/i915/intel_display.c:1028
intel_wait_for_pipe_off+0xe2/0x1a0 [i915]()
[  506.787703] Hardware name:         
[  506.787704] pipe_off wait timed out
[  506.787705] Modules linked in: snd_hda_codec_hdmi snd_hda_codec_realtek
pci_stub vboxpci(OF) vboxnetadp(OF) vboxnetflt(OF) vboxdrv(OF) parport_pc ppdev
rfcomm bnep bluetooth binfmt_misc nls_iso8859_1 kvm_intel kvm
ghash_clmulni_intel aesni_intel aes_x86_64 xts lrw gf128mul ablk_helper cryptd
microcode joydev snd_hda_intel snd_usb_audio snd_hda_codec snd_usbmidi_lib
snd_hwdep snd_pcm snd_page_alloc tpm_tis snd_seq_midi snd_seq_midi_event
snd_rawmidi snd_seq snd_seq_device snd_timer lpc_ich i915 snd soundcore video
drm_kms_helper mei drm i2c_algo_bit w83627ehf hwmon_vid mac_hid coretemp lp
parport hid_generic usbhid hid usb_storage firewire_ohci firewire_core ahci
crc_itu_t libahci e1000e
[  506.787750] Pid: 1700, comm: Xorg Tainted: GF       W  O 3.8.0-16-generic
#26
[  506.787752] Call Trace:
[  506.787759]  [<ffffffff810587df>] warn_slowpath_common+0x7f/0xc0
[  506.787762]  [<ffffffff810588dc>] warn_slowpath_fmt+0x4c/0x50
[  506.787777]  [<ffffffffa0196d22>] intel_wait_for_pipe_off+0xe2/0x1a0 [i915]
[  506.787790]  [<ffffffffa0196ef6>] intel_disable_pipe+0x116/0x190 [i915]
[  506.787801]  [<ffffffffa019769b>] ironlake_crtc_disable+0xdb/0x880 [i915]
[  506.787816]  [<ffffffffa010995c>] ? drm_mode_create+0x4c/0x80 [drm]
[  506.787830]  [<ffffffffa019f34b>] intel_set_mode+0x36b/0xa30 [i915]
[  506.787844]  [<ffffffffa01a0126>] intel_crtc_set_config+0x716/0x950 [i915]
[  506.787856]  [<ffffffffa010bc21>] drm_mode_setcrtc+0x121/0x5a0 [drm]
[  506.787867]  [<ffffffffa00fc559>] drm_ioctl+0x4e9/0x5b0 [drm]
[  506.787878]  [<ffffffffa010bb00>] ? drm_mode_setplane+0x370/0x370 [drm]
[  506.787883]  [<ffffffff811a5849>] do_vfs_ioctl+0x99/0x570
[  506.787887]  [<ffffffff811a5db1>] sys_ioctl+0x91/0xb0
[  506.787892]  [<ffffffff816d32dd>] system_call_fastpath+0x1a/0x1f
[  506.787894] ---[ end trace 383823ffb51e7397 ]---

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