Date: Tue, 25 May 1999 16:49:50 +0100 From: Roger Hardiman <roger@cs.strath.ac.uk> To: hackers@freebsd.org Subject: PCI bus chanages from 2.2.x to 3.x/4.x and data corruption. Message-ID: <374AC69E.8A0EA3B1@cs.strath.ac.uk>
next in thread | raw e-mail | index | archive | help
Please read this. It affects our commercial users. I'm trying to find out if/how we initialise the PCI bus and any memory controllers differently in 3.x compared to 2.2.x Since upgrading from 2.2.x to 3.x or 4.x, many many users have noticed garbage on the video grabbed by the bt848 in their Video Conferencing systems. (based on VIC). This has been noticed by some commercial users of FreeBSD as well as Academic users, and it looks bad on us. Luigi has 1 PC with 2 hard disks, a 2.2.x setup and a 3.x setup. This allowed him to factor out all the variables except the 2.2.x kernel and the 3.x kernel. (He used the same Bt848 driver) On 2.2.x VIC runs great. On 3.x there is corruption to the video. Can people who have worked on the PCI bus, changes to bus mastering, perhaps changes to the IDE code (to enable bus mastering) or anything which may influence this get in tough. I posted this problem months ago and got little responce. This is hurting our customers! Bye Roger -- Roger Hardiman Strathclyde Uni Telepresence Research Group, Glasgow, Scotland. http://telepresence.dmem.strath.ac.uk 0141 548 2897 roger@cs.strath.ac.uk To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-hackers" in the body of the message
Want to link to this message? Use this URL: <https://mail-archive.FreeBSD.org/cgi/mid.cgi?374AC69E.8A0EA3B1>