Date: Mon, 31 Dec 2018 17:22:37 +0100 From: =?UTF-8?B?VMSzbA==?= Coosemans <tijl@FreeBSD.org> To: Andrea Venturoli <ml@netfence.it> Cc: freebsd-x11@freebsd.org Subject: Re: Radeon HD 4250: screen going blank every few seconds Message-ID: <20181231172237.55a1c19f@kalimero.tijl.coosemans.org> In-Reply-To: <2cb2790f-4007-c1dc-3b49-e92e9810ee67@netfence.it> References: <4560f9e2-efcf-a1f5-728c-c26fcec34353@netfence.it> <20181230224607.1feb9cad@kalimero.tijl.coosemans.org> <20181230231814.4bf4cbff@kalimero.tijl.coosemans.org> <b4b173b0-c516-266a-703e-a7e3bdcb089e@netfence.it> <2cb2790f-4007-c1dc-3b49-e92e9810ee67@netfence.it>
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On Mon, 31 Dec 2018 14:56:17 +0100 Andrea Venturoli <ml@netfence.it> wrote: > On 12/31/18 8:08 AM, Andrea Venturoli wrote: >> I think I did it right, since "hw_i2c forced on, you may experience >> display detection problems!" is gone from Xorg.log. >> However, it didn't help with the screen going blank. > > Sorry, I was too fast about this, as I had misspelled the line in > /boot/loader.conf. > > When correctly written, the machine boots, but as soon as the kmod is > loaded: > _ if the screen is connected via VGA connector, everything is fine (but > this is also true without this setting); > _ if the screen is connected via HDMI, it goes blank for good (can't > interact with the system anymore and have to reboot); > _ if the screen is connected via DVI, resolution goes to 1024x768 and > that's the maximum available even after X11 is started. > > So, this is a no go. Software i2c needs this patch: https://github.com/FreeBSDDesktop/kms-drm/commit/6a3d6e69ab5bf47756fde2a7c00e3f7d6295c10f.patch Save it as graphics/drm-fbsd11.2-kmod/files/patch-i2c and delete "a/" and "b/" from the file. Then rebuild drm-fbsd11.2-kmod.
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