From mboxrd@z Thu Jan 1 00:00:00 1970 From: John David Anglin Subject: Re: PCI video card hangs during system boot Date: Wed, 13 Apr 2016 11:02:01 -0400 Message-ID: <570E5F69.4010203@bell.net> References: <1587186.CtnrnCsSzp@caliban.sf-tec.de> <570D38BF.7040307@bell.net> Mime-Version: 1.0 Content-Type: text/plain; charset=utf-8; format=flowed Cc: Rolf Eike Beer , linux-parisc To: Simone Mannori Return-path: In-Reply-To: List-ID: List-Id: linux-parisc.vger.kernel.org On 2016-04-13 3:06 AM, Simone Mannori wrote: >> Maybe pulling FireGL X1 will help: >> https://lists.freedesktop.org/archives/dri-users/2015-February/000034.html > Already done Dave: same error message during system boot. Just to be > clear, the error message is also indipendent by the PCI slot position. > Thanks for the hint, anyway. Just one further thought regarding FireGL X1. The OLS article by Grant referenced in the above link indicated that a common problem in porting drivers to parisc was timing issues with I/O writes. This was fixed in a couple of drivers by doing a read after doing a write. Possibly, the radeon driver could be hacked to always read after write as a test. I also read somewhere ia64 linux using zx1 chipset did work at one time. This link gives some history on ia64 and might give some hints about other things to try: http://comments.gmane.org/gmane.linux.debian.ports.ia64/3031 > > My conclusion is that the "vanilla-PC" ATI RADEON 9200 128M PCI is not > "BIOS compatible" with the c8000. Agreed. There's no way to change the c8000 BIOS. I'd hoped that removing the X1 might free up I/O space and allow 9200 to work. Dave -- John David Anglin dave.anglin@bell.net