Date: Sun, 6 Mar 2011 19:29:25 GMT From: Martin Birgmeier <martin.birgmeier@siemens.com> To: freebsd-gnats-submit@FreeBSD.org Subject: misc/155320: cpufreq/powerd + xorg-7.5.1 + xf86-video-intel-2.7.1_4 leads to freeze Message-ID: <201103061929.p26JTPKU037959@red.freebsd.org> Resent-Message-ID: <201103061930.p26JU9u5070756@freefall.freebsd.org>
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>Number: 155320
>Category: misc
>Synopsis: cpufreq/powerd + xorg-7.5.1 + xf86-video-intel-2.7.1_4 leads to freeze
>Confidential: no
>Severity: serious
>Priority: medium
>Responsible: freebsd-bugs
>State: open
>Quarter:
>Keywords:
>Date-Required:
>Class: sw-bug
>Submitter-Id: current-users
>Arrival-Date: Sun Mar 06 19:30:09 UTC 2011
>Closed-Date:
>Last-Modified:
>Originator: Martin Birgmeier
>Release: 7.4.0 i386
>Organization:
MBi at home
>Environment:
FreeBSD a.xyzzy 7.4-RELEASE FreeBSD 7.4-RELEASE #1: Sun Feb 20 20:18:26 CET 2011 root@v901.xyzzy:/.../hal/z/OBJ/FreeBSD/i386/RELENG_7_4_0_RELEASE/src/sys/XYZZY_SMP_NA i386
>Description:
Since the recent upgrade of xorg the machine freezes without apparent reason. No core dump is produced, the screen remains steady. This can only be terminated by a hard power off.
Not running powerd seems to avoid the problem.
Note 1: Before completely freezing, the machine from time to time hangs for from a few tenths to several seconds. After such a freeze, "xload" shows a sharp spike from near zero to approx. 1.5..2 load which subsequently decays exponentially.
Note 2: At the end of last December, I tried to upgrade this machine to 8.1 amd64. This produced totally unstable behavior/crashes, most likely also related to the video driver. At that time, I did not yet suspect cpufreq/powerd.
The machine uses the following graphics controller:
vgapci0@pci0:0:2:0: class=0x030000 card=0x13f710cf chip=0x2a028086 rev=0x03 hdr=0x00
vendor = 'Intel Corporation'
device = 'Mobile 965 Express Integrated Graphics Controller'
class = display
subclass = VGA
vgapci1@pci0:0:2:1: class=0x038000 card=0x13f710cf chip=0x2a038086 rev=0x03 hdr=0x00
vendor = 'Intel Corporation'
device = 'Mobile 965 Express Integrated Graphics Controller'
class = display
The chipset is ICH8.
>How-To-Repeat:
See the description above. Generally, this cannot be reproduced easily, however, the machine will crash within seconds to hours from starting X.
>Fix:
>Release-Note:
>Audit-Trail:
>Unformatted:
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