Date: Thu, 3 Dec 2015 15:07:32 +0200 From: Andriy Gapon <avg@FreeBSD.org> To: =?UTF-8?Q?Jean-S=c3=a9bastien_P=c3=a9dron?= <jean-sebastien.pedron@dumbbell.fr>, freebsd-x11@FreeBSD.org Subject: Re: problem with discrete video card Message-ID: <56603E94.3010601@FreeBSD.org> In-Reply-To: <565CD111.4070808@dumbbell.fr> References: <5656D370.1090008@FreeBSD.org> <565CD111.4070808@dumbbell.fr>
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On 01/12/2015 00:43, Jean-Sébastien Pédron wrote: > On 26/11/2015 10:40, Andriy Gapon wrote: >> I've been given a Radeon 6850 based video card that supposedly used to work. >> But for me it works only in the text mode. Any attempt to use it with radeonkms >> driver results in a reboot (no panic or trap). I've done a little bit of >> investigation and I see that the crash happens in radeonfb_create() when the >> following code is executed: > > Hi Andriy! > > Could you please try again with drm.debug=7 in your /boot/loader.conf? I will try this, thank you for the suggestion. > Do you have any local patches beside the moved line? Because here, I get > this: > > info: [drm] fb mappable at 0xD0142000 > info: [drm] vram apper at 0xD0000000 > info: [drm] size 8294400 > info: [drm] fb depth is 24 > info: [drm] pitch is 7680 > > Note the "vram apper at" message. The label in your dmesg is shorter but > the address is longer. Yeah, I wanted to add printing of fb_vbase, but accidentally removed printing of vram apper. I restored that line back, so the output now looks like this: info: [drm] fb mappable at 0xD0142000 info: [drm] vbase at 0xFFFFF800D0142000 info: [drm] vram apper at 0xD0000000 info: [drm] size 8294400 info: [drm] fb depth is 24 info: [drm] pitch is 7680 -- Andriy Gapon
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