From mboxrd@z Thu Jan 1 00:00:00 1970 From: bugzilla-daemon@freedesktop.org Subject: [Bug 49981] On HD6850, Power Profile doesn't change if 2 screen is attached. Date: Tue, 02 Oct 2012 09:40:56 +0000 Message-ID: References: Mime-Version: 1.0 Content-Type: multipart/mixed; boundary="===============0083180591==" Return-path: Received: from culpepper.freedesktop.org (unknown [131.252.210.165]) by gabe.freedesktop.org (Postfix) with ESMTP id 903D89E7D7 for ; Tue, 2 Oct 2012 02:40:56 -0700 (PDT) In-Reply-To: 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 --===============0083180591== Content-Type: multipart/alternative; boundary="1349170856.5dC3FEa1.25102"; charset="us-ascii" --1349170856.5dC3FEa1.25102 Date: Tue, 2 Oct 2012 09:40:56 +0000 MIME-Version: 1.0 Content-Type: text/plain; charset="UTF-8" https://bugs.freedesktop.org/show_bug.cgi?id=49981 --- Comment #14 from graham --- > starting with BTC, there is one state that is used for both > + * MH and SH. Difference is that we always use the high clock index for > + * mclk. I don't think that is correct. It can clearly be seen in Windows that Barts uses different idles for multi head than it does for single head, but uses the same mid and high. Cayman has a different system to barts too I suspect. > ((rdev->pm.profile_index == PM_PROFILE_MID_MH_IDX) || > + (rdev->pm.profile_index == PM_PROFILE_LOW_MH_IDX))) > + mclk = rdev->pm.power_state[rdev->pm.requested_power_state_index]. > + clock_info[rdev->pm.profiles[PM_PROFILE_HIGH_MH_IDX].dpms_on_cm_idx].mclk; Isn't that dangerous? It makes the card operate outside of the bios table profiles. You would, in some cases, be increasing the memory clock without increasing the voltage. -- You are receiving this mail because: You are the assignee for the bug. --1349170856.5dC3FEa1.25102 Date: Tue, 2 Oct 2012 09:40:56 +0000 MIME-Version: 1.0 Content-Type: text/html; charset="UTF-8"

Comment # 14 on bug 49981 from 
>  starting with BTC, there is one state that is used for both
> + * MH and SH. Difference is that we always use the high clock index for
> + * mclk.

I don't think that is correct. It can clearly be seen in Windows that Barts
uses different idles for multi head than it does for single head, but uses the
same mid and high. Cayman has a different system to barts too I suspect.

> ((rdev->pm.profile_index == PM_PROFILE_MID_MH_IDX) ||
> + (rdev->pm.profile_index == PM_PROFILE_LOW_MH_IDX)))
> + mclk = rdev->pm.power_state[rdev->pm.requested_power_state_index].
> + clock_info[rdev->pm.profiles[PM_PROFILE_HIGH_MH_IDX].dpms_on_cm_idx].mclk;

Isn't that dangerous? It makes the card operate outside of the bios table
profiles. You would, in some cases, be increasing the memory clock without
increasing the voltage.

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  • You are the assignee for the bug.
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