Date: Fri, 4 Nov 2016 08:16:44 +0100 From: Polytropon <freebsd@edvax.de> To: Manish Jain <bourne.identity@hotmail.com> Cc: "freebsd-questions@freebsd.org" <freebsd-questions@freebsd.org> Subject: Re: Could this be a software problem or a hardware issue ? Message-ID: <20161104081644.21ad7e36.freebsd@edvax.de> In-Reply-To: <VI1PR02MB097424E598A33604546526E9F6A00@VI1PR02MB0974.eurprd02.prod.outlook.com> References: <mailman.115.1478088006.16970.freebsd-questions@freebsd.org> <VI1PR02MB097424E598A33604546526E9F6A00@VI1PR02MB0974.eurprd02.prod.outlook.com>
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On Wed, 2 Nov 2016 12:20:33 +0000, Manish Jain wrote: > XP is working very nicely. "Windows" works nicely even with defective hardware, it's just that you don't notice it in the first place. ;-) > But FreeBSD is giving me a syndrome : If I > set the X driver to vesa, I get normal X display (with no drm, of > course). But if set the X driver to nvidia (which should be the correct > default for my NVidia GT 710 card), I get a strange screen with 'startx' > : mostly black with patches of colours spread across the screen. This somehow looks like "garbage in the graphics memory". A card named "GT 710" is not listed in the compatibility list at https://wiki.freebsd.org/Graphics - can you provide the complete name (from "pciconf -lv" and "dmesg" output) as well as possible detection messages from /var/log/Xorg.0.log (X log file)? The name "GT 710" seems to refer to an NVidia GeForce card: https://wiki.freebsd.org/Graphics#NVidia_.2F_GeForce_Graphics It's missing from that list. > Rebooting with the driver reset to vesa solves the problem. You could try one of the two alternate nVidia drivers which can be installed, and then loaded via xorg.conf: "nouveau" and "nv". Both don't provide any great 3D support (compared to the proprietary "nvidia" driver), but they might be worth a try. > Further (with the X driver set to nvidia), I spotted that my ttyv0 gets > filled up with : > > ata0: FAILURE - odd-sized DMA transfer attempt 5 % 2 > ata0: setting up DMA failed > > There are 3 components that I suspect could be the root of my problem[s] : > > 1) the motherboard (Gigabyte GA970) > 2) RAM (Kingston DDR3 8 GB x 1, 1600 MHz) > 3) the graphics card (NVidia 2 GB, GT 710) > > All of the above are just 2-3 months old, the RAM probably the newest. If the errors only appear when the nvidia driver is being used, a kind of "DMA conflict" affecting the ata controller (where the mass storage and optical drives are being accessed with) could be possible. The driver uses the DRM / DRI facilities to perform direct memory access, the storage controllers do the same. An older web forum thread mentions HAL being the source of a similar problem. Do you have HAL (hald) running? (Anyway, it should be up to date if installed, and it's deprecated for a long time in the Linux world already.) https://forums.freebsd.org/threads/44604/ -- Polytropon Magdeburg, Germany Happy FreeBSD user since 4.0 Andra moi ennepe, Mousa, ...
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