From mboxrd@z Thu Jan 1 00:00:00 1970
From: bugzilla-daemon-CC+yJ3UmIYqDUpFQwHEjaQ@public.gmane.org
Subject: [Bug 95044] New: [NVA0] [Reclocking] GPU doesn't relax
memory clocks
Date: Wed, 20 Apr 2016 21:41:00 +0000
Message-ID:
Bug ID
95044
Summary
[NVA0] [Reclocking] GPU doesn't relax memory clocks
Product
xorg
Version
unspecified
Hardware
x86-64 (AMD64)
OS
Linux (All)
Status
NEW
Severity
normal
Priority
medium
Component
Driver/nouveau
Assignee
nouveau@lists.freedesktop.org
Reporter
debianlinuxero1@gmail.com
QA Contact
xorg-team@lists.x.org
Created attachment 123101 [details]
Kernel_log
The card doesn't relax memory clocks on step down reclock transitions.
For example, if I try [code]echo 07 > pstate[/code] from a 0f state, I see this
:
[code]
03: core 300 MHz shader 600 MHz memory 100 MHz
07: core 400 MHz shader 800 MHz memory 300 MHz AC DC *
0f: core 576 MHz shader 1242 MHz memory 999 MHz
AC: core 399 MHz shader 799 MHz memory 999 MHz
[/code]
The problem happens in the 3 step down possible transitions :
0f -> 07, 07 -> 03 and 0f -> 03.
The memory clock always stands as high as the major's state I set up.
The system is :
Phenom II X4 905e, 4 GB DDR3 @ 1333, nVidia GeForce GTX 260, 790FX chipset.
Debian GNU/Linux stretch (Testing) x64
Kernel 4.4.0-1, libdrm-nouveau2 2.4.67-1.
The attachment file shows a kernel dmesg after switching from state 0f to 07.