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<base href="https://bugs.freedesktop.org/" />
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<body><table border="1" cellspacing="0" cellpadding="8">
<tr>
<th>Priority</th>
<td>medium
</td>
</tr>
<tr>
<th>Bug ID</th>
<td><a class="bz_bug_link
bz_status_NEW "
title="NEW --- - DP output not working on Baytrail Desktop"
href="https://bugs.freedesktop.org/show_bug.cgi?id=73477">73477</a>
</td>
</tr>
<tr>
<th>CC</th>
<td>intel-gfx-bugs@lists.freedesktop.org
</td>
</tr>
<tr>
<th>Assignee</th>
<td>intel-gfx-bugs@lists.freedesktop.org
</td>
</tr>
<tr>
<th>Summary</th>
<td>DP output not working on Baytrail Desktop
</td>
</tr>
<tr>
<th>QA Contact</th>
<td>intel-gfx-bugs@lists.freedesktop.org
</td>
</tr>
<tr>
<th>Severity</th>
<td>normal
</td>
</tr>
<tr>
<th>Classification</th>
<td>Unclassified
</td>
</tr>
<tr>
<th>OS</th>
<td>Linux (All)
</td>
</tr>
<tr>
<th>Reporter</th>
<td>sarvatt@gmail.com
</td>
</tr>
<tr>
<th>Hardware</th>
<td>x86-64 (AMD64)
</td>
</tr>
<tr>
<th>Status</th>
<td>NEW
</td>
</tr>
<tr>
<th>Version</th>
<td>XOrg CVS
</td>
</tr>
<tr>
<th>Component</th>
<td>DRM/Intel
</td>
</tr>
<tr>
<th>Product</th>
<td>DRI
</td>
</tr></table>
<p>
<div>
<pre>-- chipset: Intel Corporation ValleyView Gen7 [8086:0f31]
-- system architecture: x86_64
-- Linux distribution: Ubuntu 12.04.2
-- libdrm 2.4.43
-- Kernel versions affected: 3.13-rc4, drm-intel-nightly-01072014
-- xf86-video-intel: 2.20.9
The displayport output does not work on this baytrail machine on any kernel.
drm.debug=0xe dmesgs from 3.13-rc4 and drm-intel-nightly 01/07/2014 attached
with more info.
[ 127.580641] ------------[ cut here ]------------
[ 127.580674] WARNING: CPU: 2 PID: 1160 at
/home/apw/COD/linux/drivers/gpu/drm/i915/intel_display.c:1535
vlv_wait_port_ready+0x11a/0x140 [i915]()
[ 127.580677] timed out waiting for port C ready: 0xf000a0ff
[ 127.580680] Modules linked in: bnep rfcomm bluetooth parport_pc ppdev i915
snd_hda_codec_hdmi snd_hda_codec_realtek drm_kms_helper snd_hda_intel psmouse
drm snd_hda_codec dm_multipath scsi_dh snd_hwdep snd_pcm snd_seq_midi
snd_rawmidi snd_seq_midi_event snd_seq snd_timer hp_wmi snd_seq_device snd
sparse_keymap i2c_algo_bit video soundcore serio_raw snd_page_alloc mac_hid wmi
nls_iso8859_1 lp parport hid_generic usbhid hid dm_mirror dm_region_hash dm_log
btrfs usb_storage raid6_pq r8169 ahci libahci mii xor libcrc32c
[ 127.580729] CPU: 2 PID: 1160 Comm: Xorg Not tainted 3.13.0-994-generic
#201401070405
[ 127.580731] Hardware name: Hewlett-Packard Foo, BIOS 80.00 12/06/2013
[ 127.580734] 00000000000005ff ffff8802332a3a18 ffffffff81756edc
0000000000000007
[ 127.580740] ffff8802332a3a68 ffff8802332a3a58 ffffffff81067bac
ffff88023425c000
[ 127.580745] ffff880230b9c000 00000000000000f0 00000000ffff577e
ffff8802304c1800
[ 127.580750] Call Trace:
[ 127.580759] [<ffffffff81756edc>] dump_stack+0x46/0x58
[ 127.580766] [<ffffffff81067bac>] warn_slowpath_common+0x8c/0xc0
[ 127.580770] [<ffffffff81067c96>] warn_slowpath_fmt+0x46/0x50
[ 127.580789] [<ffffffffa037ae4a>] vlv_wait_port_ready+0x11a/0x140 [i915]
[ 127.580810] [<ffffffffa03927ee>] vlv_pre_enable_dp+0x11e/0x160 [i915]
[ 127.580829] [<ffffffffa037df24>] valleyview_crtc_enable+0x1e4/0x220 [i915]
[ 127.580848] [<ffffffffa037f817>] __intel_set_mode+0x2b7/0x3a0 [i915]
[ 127.580866] [<ffffffffa03810e6>] intel_set_mode+0x16/0x30 [i915]
[ 127.580886] [<ffffffffa038139d>] intel_crtc_set_config+0x29d/0x310 [i915]
[ 127.580903] [<ffffffffa02715bc>] drm_mode_set_config_internal+0x5c/0xe0
[drm]
[ 127.580917] [<ffffffffa0274b10>] drm_mode_setcrtc+0x310/0x4c0 [drm]
[ 127.580929] [<ffffffffa0264df3>] drm_ioctl+0x4d3/0x5f0 [drm]
[ 127.580942] [<ffffffffa0274800>] ? drm_mode_setplane+0x3f0/0x3f0 [drm]
[ 127.580949] [<ffffffff811d6865>] do_vfs_ioctl+0x75/0x2c0
[ 127.580954] [<ffffffff810226f5>] ? syscall_trace_enter+0x165/0x280
[ 127.580958] [<ffffffff811d6b41>] SyS_ioctl+0x91/0xb0
[ 127.580963] [<ffffffff8176cbbf>] tracesys+0xe1/0xe6
[ 127.580966] ---[ end trace 12330e013531b2fd ]---</pre>
</div>
</p>
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