From mboxrd@z Thu Jan 1 00:00:00 1970 From: Jan Kiszka Subject: Low power operational mode of nv50 Date: Sat, 22 Jan 2011 12:13:26 +0100 Message-ID: <4D3ABBD6.1070509@web.de> Mime-Version: 1.0 Content-Type: multipart/mixed; boundary="===============0324708086==" Return-path: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: nouveau-bounces+gcfxn-nouveau=m.gmane.org-PD4FTy7X32lNgt0PjOBp9y5qC8QIuHrW@public.gmane.org Errors-To: nouveau-bounces+gcfxn-nouveau=m.gmane.org-PD4FTy7X32lNgt0PjOBp9y5qC8QIuHrW@public.gmane.org To: nouveau-PD4FTy7X32lNgt0PjOBp9y5qC8QIuHrW@public.gmane.org List-Id: nouveau.vger.kernel.org This is an OpenPGP/MIME signed message (RFC 2440 and 3156) --===============0324708086== Content-Type: multipart/signed; micalg=pgp-sha1; protocol="application/pgp-signature"; boundary="------------enig474433803E0EE19E120FD502" This is an OpenPGP/MIME signed message (RFC 2440 and 3156) --------------enig474433803E0EE19E120FD502 Content-Type: text/plain; charset=ISO-8859-15 Content-Transfer-Encoding: quoted-printable Hi, what are the missing bits to get nv50-class hardware into lowest power mode? Even when clocking down to perflvl 0, the GPU temperature of my Quadro FX 880M is still quickly climbing until it reaches 60 =B0C and the= fan goes on for a while (I tried up to 2.6.38-rc1 so far - any progress in nouveau-next?). This is not only annoying but also sucking several watts more than what is feasible - unfortunate for mobile operation. The benchmark is still the blob which runs the card at level 0 around 54 =B0C, and that means fan-less. But as the blob is causing increasing troubles across suspend/resume, not to speak of all its other limitations. So I'd rather like to switch ASAP now. What may cause this different power consumption? As the clocking is apparently the same (the blob even claims to use a few more MHz), I was wondering if the less sophisticated firmware of nouveau could be the reason. Or is the host driver keeping the GPU too busy even in idle state= ? Is there anything I could do to help analyzing or even resolving this iss= ue? Thanks, Jan --------------enig474433803E0EE19E120FD502 Content-Type: application/pgp-signature; name="signature.asc" Content-Description: OpenPGP digital signature Content-Disposition: attachment; filename="signature.asc" -----BEGIN PGP SIGNATURE----- Version: GnuPG v2.0.15 (GNU/Linux) Comment: Using GnuPG with SUSE - http://enigmail.mozdev.org/ iEYEARECAAYFAk06u9YACgkQitSsb3rl5xRKWgCdHpuSDScKM7lbJjeqIkqDozac DmwAn0UtEWT0knaKmpFVcZHGgcJU0g50 =+KTg -----END PGP SIGNATURE----- --------------enig474433803E0EE19E120FD502-- --===============0324708086== Content-Type: text/plain; charset="us-ascii" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit Content-Disposition: inline _______________________________________________ Nouveau mailing list Nouveau-PD4FTy7X32lNgt0PjOBp9y5qC8QIuHrW@public.gmane.org http://lists.freedesktop.org/mailman/listinfo/nouveau --===============0324708086==--