From mboxrd@z Thu Jan 1 00:00:00 1970 From: bugzilla-daemon@freedesktop.org Subject: [Bug 37841] New: Display distortion with powerprofile mid or low Date: Wed, 1 Jun 2011 21:49:38 -0700 (PDT) Message-ID: Mime-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Return-path: Received: from annarchy.freedesktop.org (annarchy.freedesktop.org [131.252.210.176]) by gabe.freedesktop.org (Postfix) with ESMTP id 078269ECB6 for ; Wed, 1 Jun 2011 21:49:39 -0700 (PDT) List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: dri-devel-bounces+sf-dri-devel=m.gmane.org@lists.freedesktop.org Errors-To: dri-devel-bounces+sf-dri-devel=m.gmane.org@lists.freedesktop.org To: dri-devel@lists.freedesktop.org List-Id: dri-devel@lists.freedesktop.org https://bugs.freedesktop.org/show_bug.cgi?id=37841 Summary: Display distortion with powerprofile mid or low Product: DRI Version: XOrg CVS Platform: x86-64 (AMD64) OS/Version: Linux (All) Status: NEW Severity: major Priority: medium Component: DRM/Radeon AssignedTo: dri-devel@lists.freedesktop.org ReportedBy: bugreport@spambog.com Overview: The display is distorted when power-profile low or mid is activated. Steps to reproduce: echo low > /sys/class/drm/card0/device/power_profile or echo mid > /sys/class/drm/card0/device/power_profile Actual Results: The display is distorted, but the system is still usable. The distortion consists of noisy flickering vertical stripes, with columns between them that look ok. When I choose powerprofile default or auto or high the distortion goes away and everything's as before. Output of cat /sys/kernel/debug/dri/{0,64}/radeon_pm_info: With powerprofile default: default engine clock: 500000 kHz current engine clock: 499500 kHz default memory clock: 600000 kHz current memory clock: 594000 kHz voltage: 1000 mV PCIE lanes: 16 default engine clock: 500000 kHz current engine clock: 499500 kHz default memory clock: 600000 kHz current memory clock: 594000 kHz voltage: 1000 mV PCIE lanes: 16 With powerprofile mid: default engine clock: 500000 kHz current engine clock: 124870 kHz default memory clock: 600000 kHz current memory clock: 405000 kHz voltage: 900 mV PCIE lanes: 16 default engine clock: 500000 kHz current engine clock: 124870 kHz default memory clock: 600000 kHz current memory clock: 405000 kHz voltage: 900 mV PCIE lanes: 16 With powerprofile low: default engine clock: 500000 kHz current engine clock: 124870 kHz default memory clock: 600000 kHz current memory clock: 405000 kHz voltage: 900 mV PCIE lanes: 16 default engine clock: 500000 kHz current engine clock: 124870 kHz default memory clock: 600000 kHz current memory clock: 405000 kHz voltage: 900 mV PCIE lanes: 16 With powerprofile high: default engine clock: 500000 kHz current engine clock: 499500 kHz default memory clock: 600000 kHz current memory clock: 594000 kHz voltage: 1000 mV PCIE lanes: 16 default engine clock: 500000 kHz current engine clock: 499500 kHz default memory clock: 600000 kHz current memory clock: 594000 kHz voltage: 1000 mV PCIE lanes: 16 Expected Results: No display distortion and perhaps other values in radeon_pm_info (values of mid and low profile should differ and perhaps there should have been some lanes deactivated by these profiles). Btw. there is no such problem when I use the powermanagement-features in xorg.conf (ForceLowPowerMode, ClockGating, DynamicPM) without KMS enabled. Versions: See attached logfiles. Bug exists since power-profiles had been introduced (in kernel 2.6.34 or 2.6.35). -- Configure bugmail: https://bugs.freedesktop.org/userprefs.cgi?tab=email ------- You are receiving this mail because: ------- You are the assignee for the bug.