Date: Fri, 27 Mar 2015 10:10:22 +0100 From: Jakob Alvermark <jakob@alvermark.net> To: Jakob Alvermark <jakob@alvermark.net> Cc: freebsd-x11 <freebsd-x11@freebsd.org>, FreeBSD Current <freebsd-current@freebsd.org> Subject: Re: [Call for testers] DRM device-independent code update to Linux 3.8 (take #2) Message-ID: <95DAA262-89CA-44D5-BD15-CD9E90A95DAB@alvermark.net> In-Reply-To: <18597.85.229.93.187.1427403630.squirrel@webmail.alvermark.net> References: <54F636B3.90701@FreeBSD.org> <20150307111305.10d7678d@kan> <CAOFF%2BZ3ZDjt4nTcyV%2B9_GZvexsbFBYz84q-J79tcUue9jx6NEQ@mail.gmail.com> <5510A1E3.9040603@selasky.org> <18597.85.229.93.187.1427403630.squirrel@webmail.alvermark.net>
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On 26 mar 2015, at 22:00, Jakob Alvermark wrote: > On Tue, March 24, 2015 00:29, Hans Petter Selasky wrote: >> Hi, >>=20 >>=20 >> Without the attached kernel patch(es), Xorg starts consuming alot of = CPU >> and becomes very unresponsive and unusable. >>=20 >> Using ktrace reveals that X-org is issuing = DRM_IOCTL_MODE_GETCONNECTOR >> over and over again with no apparent reason. It doesn't happen when = using a >> simple window manager like blackbox. I was not able to use XFCE4 = (9-stable >> userland) with 11-current kernel at all, after the latest DRM2 kernel >> updates. It worked fine before the update. >>=20 >> I'm not sure what is causing it. Going through the new DRM2 code >> revealed that a mode sorting function did not take all parameters = like >> interlaced or not into account, causing the mode list to be = reshuffelled >> every time a new mode scan was done. Not sure if Xorg cares about = this >> though. >=20 > I got the same problem with XFCE4, Xorg at 100% CPU. >=20 > Applied the patch and it works again. Interestingly, xrandr now lists a lot more available modes than before = the DRM code update. I thought it was my cheap TV that only supported 1080i, but it turns out = that now I can use 1080p@60Hz! Jakob=
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