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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 --- - 8086:0f31 - internal display unusable if second display is connected"
href="https://bugs.freedesktop.org/show_bug.cgi?id=80532">80532</a>
</td>
</tr>
<tr>
<th>Assignee</th>
<td>chris@chris-wilson.co.uk
</td>
</tr>
<tr>
<th>Summary</th>
<td>8086:0f31 - internal display unusable if second display is connected
</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>fcbug@arcor.de
</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>unspecified
</td>
</tr>
<tr>
<th>Component</th>
<td>Driver/intel
</td>
</tr>
<tr>
<th>Product</th>
<td>xorg
</td>
</tr></table>
<p>
<div>
<pre>Graphics Chip: 8086:0f31 VGA compatible controller: Intel Corporation Atom
Processor Z36xxx/Z37xxx Series Graphics & Display (rev 0c)
system archicture: x86_64
driver: xorg-x11-drv-intel.x86_64 2.21.15-7.fc20
OpenGL version string: 3.0 Mesa 10.1.5
kernel: 3.14.8-200.fc20.x86_64
distribution: Fedora 20
machine: Asus F200MA-KX076H
display: internal LCD, externel VGA
How to repoduce:
1) Boot without external monitor
2) Connect extenal monitor
result:
The external monitor is switched on,
The internal monitor is activ regarding display settings but off
journalctl:
Jun 21 15:52:56 beruna.fritz.box kernel: [drm:intel_dp_start_link_train]
*ERROR* too many full retries, give up
Jun 21 15:52:56 beruna.fritz.box kernel: [drm:intel_dp_start_link_train]
*ERROR* too many full retries, give up
Jun 21 15:52:56 beruna.fritz.box kernel: [drm:intel_dp_complete_link_train]
*ERROR* failed to train DP, aborting
Jun 21 15:52:57 beruna.fritz.box kernel: ------------[ cut here ]------------
Jun 21 15:52:57 beruna.fritz.box kernel: WARNING: CPU: 0 PID: 1038 at
drivers/gpu/drm/i915/intel_display.c:1539 vlv_wait_port_
Jun 21 15:52:57 beruna.fritz.box kernel: timed out waiting for port C ready:
0xf000a0df
Jun 21 15:52:57 beruna.fritz.box kernel: Modules linked in: mmc_block tcp_lp
ccm bnep bluetooth 6lowpan_iphc ip6t_rpfilter ip6
Jun 21 15:52:57 beruna.fritz.box kernel: crc32_pclmul crc32c_intel
dibx000_common dvb_usb cfg80211 dvb_core ghash_clmulni_int
Jun 21 15:52:57 beruna.fritz.box kernel: CPU: 0 PID: 1038 Comm: Xorg Tainted: G
W 3.14.8-200.fc20.x86_64 #1
Jun 21 15:52:57 beruna.fritz.box kernel: Hardware name: ASUSTeK COMPUTER INC.
X200MA/X200MA, BIOS X200MA.302 01/21/2014
Jun 21 15:52:57 beruna.fritz.box kernel: 0000000000000000 00000000c36febf7
ffff8800b1d8d9e0 ffffffff816f0502
Jun 21 15:52:57 beruna.fritz.box kernel: ffff8800b1d8da28 ffff8800b1d8da18
ffffffff8108a1cd ffff880138a18000
Jun 21 15:52:57 beruna.fritz.box kernel: 00000000000000f0 00000001011c270c
ffff880138aea000 ffff880138a19f70
Jun 21 15:52:57 beruna.fritz.box kernel: Call Trace:
Jun 21 15:52:57 beruna.fritz.box kernel: [<ffffffff816f0502>]
dump_stack+0x45/0x56
Jun 21 15:52:57 beruna.fritz.box kernel: [<ffffffff8108a1cd>]
warn_slowpath_common+0x7d/0xa0
Jun 21 15:52:57 beruna.fritz.box kernel: [<ffffffff8108a24c>]
warn_slowpath_fmt+0x5c/0x80
Jun 21 15:52:57 beruna.fritz.box kernel: [<ffffffffa0108ad2>]
vlv_wait_port_ready+0x122/0x140 [i915]
Jun 21 15:52:57 beruna.fritz.box kernel: [<ffffffffa0125f87>]
vlv_pre_enable_dp+0xf7/0x170 [i915]
Jun 21 15:52:57 beruna.fritz.box kernel: [<ffffffffa010ddac>]
valleyview_crtc_enable+0x12c/0x490 [i915]
Jun 21 15:52:57 beruna.fritz.box kernel: [<ffffffffa01104a7>]
__intel_set_mode+0x767/0x1610 [i915]
Jun 21 15:52:57 beruna.fritz.box kernel: [<ffffffffa01137f6>]
intel_set_mode+0x16/0x30 [i915]
Jun 21 15:52:57 beruna.fritz.box kernel: [<ffffffffa01140bb>]
intel_crtc_set_config+0x7bb/0x990 [i915]
Jun 21 15:52:57 beruna.fritz.box kernel: [<ffffffffa006aa3d>]
drm_mode_set_config_internal+0x5d/0xe0 [drm]
Jun 21 15:52:57 beruna.fritz.box kernel: [<ffffffffa006d907>]
drm_mode_setcrtc+0x107/0x610 [drm]
Jun 21 15:52:57 beruna.fritz.box kernel: [<ffffffffa005ebf2>]
drm_ioctl+0x4f2/0x620 [drm]
Jun 21 15:52:57 beruna.fritz.box kernel: [<ffffffff811fd110>]
do_vfs_ioctl+0x2e0/0x4a0
Jun 21 15:52:57 beruna.fritz.box kernel: [<ffffffff811fd351>]
SyS_ioctl+0x81/0xa0
Jun 21 15:52:57 beruna.fritz.box kernel: [<ffffffff81121ed6>] ?
__audit_syscall_exit+0x1f6/0x2a0
Jun 21 15:52:57 beruna.fritz.box kernel: [<ffffffff817008e9>]
system_call_fastpath+0x16/0x1b
Jun 21 15:52:57 beruna.fritz.box kernel: ---[ end trace 9562d3148cb68a8b ]---
Jun 21 15:52:58 beruna.fritz.box colord[1020]: Automatic metadata add
icc-51c6fbbef93d7fafc235bce35951713b to xrandr-BenQ-BenQ
Jun 21 15:52:58 beruna.fritz.box colord[1020]: Device added: xrandr-BenQ-BenQ
FP93GX+-14623
3) Change display settings
result:
The mouse pointer moves on the display, but the system freezes.
No reaction on Ctrl-Alt-F2.
The laptop is not reachable with ssh.
A hard power off is the last ressort.
Kernel 3.15 and 3.16 are affected too, but the freeze is fixed with 3.15.
see: <a href="https://bugzilla.redhat.com/show_bug.cgi?id=1091726">https://bugzilla.redhat.com/show_bug.cgi?id=1091726</a></pre>
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