Date: Sun, 11 Sep 2016 14:04:09 -0500 From: Krzysztof Parzyszek <kristof@swissmail.org> To: Mark Millard <markmi@dsl-only.net> Cc: Jukka Ukkonen <jau789@gmail.com>, freebsd-ppc@freebsd.org Subject: Re: PowerMac G5 hangs/crashes on boot: 10.2, 11.0-RCx Message-ID: <5fd3b681-1050-9602-b338-fe0dc5e10642@swissmail.org> In-Reply-To: <6B075CE8-2AF5-479C-8363-6F5F33A0B62F@dsl-only.net> References: <6ad00a2d-4213-18b8-7974-534aa3758837@swissmail.org> <E90BB066-47C9-4626-BE6C-5D15ECA0E4EE@gmail.com> <db0aa91b-aa79-689a-e901-437e18b49b81@swissmail.org> <0A9EB3C7-F430-4F82-9B09-632754BB82C8@dsl-only.net> <b39a5ae1-7aa5-a71f-3aff-221fc9c2e4da@swissmail.org> <6B075CE8-2AF5-479C-8363-6F5F33A0B62F@dsl-only.net>
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On 9/10/2016 7:12 PM, Mark Millard wrote: > > Your report that you have some sort of failure after booting during the likes of buildkernel is new as far as I know. Sending the list (and/or a bugzilla report) about the failure mode and related information may be appropriate and help in the future. (May be I missed an already existing report.) I think the issues with hangs are related to the temperature sensors. I was getting console messages that the media temp sensor was reporting 120C! I realized that as I replaced the hard drive, I changed the position of the drive in a way that exposed the sensor to the wind from the fans (it used to be angled a bit). Following this line of thought, I stuck a piece of paper in front of the sensor and things seem to work. At least work better than before. I have ordered a replacement sensor from eBay, so hopefully that problem will go away. Regarding your "hack": it works perfectly! So far, my system (10.3 at the moment) has booted every single time, no exceptions, traps, unexpected conditions. This is too good to remain as a "hack". I have no experience debugging the kernel and I don't know ABI the OFW follows, but I wouldn't mind digging a bit deeper into it, if someone shared some pointers. This is all with powerpc64. I'll try checking if it helps with 11.0 next. -Krzysztof
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