Date: Wed, 24 Aug 2016 16:54:05 +0000 From: bugzilla-noreply@freebsd.org To: freebsd-bugs@FreeBSD.org Subject: [Bug 212117] Excessive power consumption in VT Message-ID: <bug-212117-8@https.bugs.freebsd.org/bugzilla/>
next in thread | raw e-mail | index | archive | help
https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=3D212117 Bug ID: 212117 Summary: Excessive power consumption in VT Product: Base System Version: CURRENT Hardware: Any OS: Any Status: New Severity: Affects Many People Priority: --- Component: kern Assignee: freebsd-bugs@FreeBSD.org Reporter: johannes@brilliantservice.co.jp I am concerned that there might be something in VT that are causing high po= wer consumption. At login prompt FreeBSD 12-CURRENT on my UP board (Intel Cherryview) the po= wer consumption is steady at 5W when idle, measured with a watt meter on the 12= 0V side. When I do kldload i915kms the power consumption drops to 4W. As comparison, even running a simple OpenGL app with 60 fps refresh rate in KMS mode does = not cause higher consumption than 4-5W. Starting X brings it up to around ~5W again. In /boot/loader.conf I'm loading zfs coretemp acpi_video CPU is 99.8% idle when running top in from ssh login.=20 The watt meter only show whole watts so the difference might not be as big = as 1 watt but there definitely is a difference. As someone else said in the mail= ing list, the difference is so big in their system it causes the fans to run hi= gh and changing to syscons solved the problem.=20 https://lists.freebsd.org/pipermail/freebsd-x11/2016-August/017860.html --=20 You are receiving this mail because: You are the assignee for the bug.=
Want to link to this message? Use this URL: <https://mail-archive.FreeBSD.org/cgi/mid.cgi?bug-212117-8>