<html>
<head>
<base href="https://bugs.freedesktop.org/" />
</head>
<body><table border="1" cellspacing="0" cellpadding="8">
<tr>
<th>Bug ID</th>
<td><a class="bz_bug_link
bz_status_NEW "
title="NEW - [Intel-gfx] 4.2-rc4 kernel warnings on HSW laptop [regression]"
href="https://bugs.freedesktop.org/show_bug.cgi?id=92451">92451</a>
</td>
</tr>
<tr>
<th>Summary</th>
<td>[Intel-gfx] 4.2-rc4 kernel warnings on HSW laptop [regression]
</td>
</tr>
<tr>
<th>Product</th>
<td>DRI
</td>
</tr>
<tr>
<th>Version</th>
<td>unspecified
</td>
</tr>
<tr>
<th>Hardware</th>
<td>All
</td>
</tr>
<tr>
<th>OS</th>
<td>All
</td>
</tr>
<tr>
<th>Status</th>
<td>NEW
</td>
</tr>
<tr>
<th>Severity</th>
<td>normal
</td>
</tr>
<tr>
<th>Priority</th>
<td>medium
</td>
</tr>
<tr>
<th>Component</th>
<td>DRM/Intel
</td>
</tr>
<tr>
<th>Assignee</th>
<td>intel-gfx-bugs@lists.freedesktop.org
</td>
</tr>
<tr>
<th>Reporter</th>
<td>jairo.daniel.miramontes.caton@intel.com
</td>
</tr>
<tr>
<th>QA Contact</th>
<td>intel-gfx-bugs@lists.freedesktop.org
</td>
</tr>
<tr>
<th>CC</th>
<td>intel-gfx-bugs@lists.freedesktop.org
</td>
</tr></table>
<p>
<div>
<pre><span class="quote">> Hi,
>
> I noticed that a HSW laptop gets a few new warnings since 4.2-rc
> kernels. One error messages pops at each boot time:
>
> Console: switching to colour dummy device 80x25
> [drm] Replacing VGA console driver
> [drm] Supports vblank timestamp caching Rev 2 (21.10.2013).
> [drm] Driver supports precise vblank timestamp query.
> vgaarb: device changed decodes: PCI:0000:00:02.0,olddecodes=io+mem,decodes=io+mem:owns=io+mem
> [drm:drm_calc_timestamping_constants [drm]] *ERROR* crtc 21: Can't calculate constants, dotclock = 0!</span >
There's patches for this one already, but I accidentally applied them for
-next, not -fixes. They should land for -rc6.
<span class="quote">> Then a warning when I start powertop:
>
> WARNING: CPU: 1 PID: 1674 at drivers/gpu/drm/drm_atomic.c:889 drm_atomic_get_property+0x232/0x2b0 [drm]()
> CPU: 1 PID: 1674 Comm: powertop Tainted: G W 4.3.0-rc4-test+ #93
> Hardware name: Hewlett-Packard HP ProBook 430 G1/1946, BIOS L73 Ver. 08.05 2013/03/15
> ffffffffa005b289 ffff880059173ca8 ffffffff81346fa9 0000000000000000
> ffff880059173ce0 ffffffff81063232 ffff8800372bc028 ffff8800373f3740
> ffff8800372bc000 ffff880062ad37c0 0000000000000001 ffff880059173cf0
> Call Trace:
> [<ffffffff81346fa9>] dump_stack+0x4b/0x72
> [<ffffffff81063232>] warn_slowpath_common+0x82/0xc0
> [<ffffffff8106332a>] warn_slowpath_null+0x1a/0x20
> [<ffffffffa0047a12>] drm_atomic_get_property+0x232/0x2b0 [drm]
> [<ffffffffa00356dc>] drm_object_property_get_value+0x6c/0x70 [drm]
> [<ffffffffa003330f>] dpms_show+0x2f/0x70 [drm]
> [<ffffffff8145f090>] dev_attr_show+0x20/0x50
> [<ffffffff8124b48c>] sysfs_kf_seq_show+0xbc/0x130
> [<ffffffff81249d73>] kernfs_seq_show+0x23/0x30
> [<ffffffff811f3d8a>] seq_read+0xca/0x360
> [<ffffffff8124a7da>] kernfs_fop_read+0x10a/0x160
> [<ffffffff811d0888>] __vfs_read+0x28/0xd0
> [<ffffffff812cbe80>] ? security_file_permission+0xa0/0xc0
> [<ffffffff811d102f>] ? rw_verify_area+0x4f/0xe0
> [<ffffffff811d1143>] vfs_read+0x83/0x130
> [<ffffffff811d1df6>] SyS_read+0x46/0xa0
> [<ffffffff81001b40>] ? syscall_return_slowpath+0x50/0x130
> [<ffffffff81659636>] entry_SYSCALL_64_fastpath+0x16/0x75
>
>
> Both don't look like serious issues, but not sexy to see at each time.</span ></pre>
</div>
</p>
<hr>
<span>You are receiving this mail because:</span>
<ul>
<li>You are the QA Contact for the bug.</li>
<li>You are on the CC list for the bug.</li>
<li>You are the assignee for the bug.</li>
</ul>
</body>
</html>