Date: Sat, 2 Feb 2013 13:31:49 +0100 (CET) From: Juergen Lock <nox@jelal.kn-bremen.de> To: smithi@nimnet.asn.au Cc: Adrian Chadd <adrian@freebsd.org>, freebsd-mobile@freebsd.org Subject: Re: Notes; Lenovo T400 Message-ID: <201302021231.r12CVnRo032404@triton8.kn-bremen.de> In-Reply-To: <20130202161405.F87033@sola.nimnet.asn.au> References: <CAJ-Vmo=GXtRuaOp5rmWN6FYQUtYNj5tpgiKHaoKZnwfBnjpAnQ@mail.gmail.com>
next in thread | previous in thread | raw e-mail | index | archive | help
In article <20130202161405.F87033@sola.nimnet.asn.au> you write: >On Wed, 30 Jan 2013 21:35:36 -0800, Adrian Chadd wrote: > > Hi, > > > > It turns out my Lenovo T400 issue? It was because in /etc/sysctl.conf > > I had this: > > > > # hw.acpi.reset_video=1 > > > > .. don't do that. > >Took some hunting to find your original Nov 27 post, boiled down to: > > > The resume results in a blank screen - whatever happens causes the > > video to not fully recover.. > >So may we assume your T400 now resumes properly? Reason I'm interested >is having last week stripped a friend's T500 almost completely down to >replace its snapped left LCD hinge - not an uncommonly reported problem >with T500s, not so much T400s, on various fora including Lenovo and >Thinkwiki - and I might get to inherit this one when she upgrades. > >A few observations from two long nights in the bowels of the beast: > >Construction quality, compared with my several IBM T23s, is crap. The >broken hinge problem exemplifies that; I loosened the tension on the >supposedly genuine but even tinnier-looking replacement hinge to >hopefully mitigate a repeat, but even so I've advised her to open and >close it gingerly and then as infrequently as is practical. > >The service manual still looks and smells like an IBM manual, but is >inaccurate in several respects. All of the supposedly nylon-covered >screws were in fact standard screws with a dab of Loctite; I only >bothered with a very light grade of Loctite on significant screws like >the heatpipe to CPU/GPU/fan attachment and the hinge-to-frame screws. > >The old remedy of blowing out heatsinks with a can of compressed air >only works after removing the heatpipes to the fan and heatsink, which >is a very finely-spaced grill on the fan output side, which was almost >100% clogged after 2 years, and blowing air INTO it from outside would >only have distributed the muck around inside, ready to re-clog the >outlet. No obvious air inlets, either. > >Yes, the heatsink compound was solidified and not well done originally. >The heatpipe to the video chips (one Nvidia, one Intel) was different to >the manual, but I may have googled up an older version. I used what >should be a good grade of silver HS compound and it now runs SO much >cooler, but these things are expected to be running hot anyway!: >hw.acpi.thermal.tz0._PSV: 105.0C >hw.acpi.thermal.tz0._HOT: -1 >hw.acpi.thermal.tz0._CRT: 110.0C > >My friend is a fast touch typist, and has managed to wear the markings >off half a dozen keycaps in just over two years, unlike old Thinkpads. >This doesn't bother her, but a hunt-n-pecker like me has to think :) > >Care to comment on what works on yours, and what doesn't? > >I have to assume you've got wireless going :) What card? Are there any >issues with BIOS blacklists for wireless cards? I _think_ all Lenovos have bios whitelists for wifi cards. > This one came with: >iwn0: <Intel WiFi Link 5100> mem 0xfd6fe000-0xfd6fffff irq 17 at device 0.0 on pci3 > >I booted it from an i386 9.1-RELEASE disc1 and have a normal and verbose >dmesg and sysctls dev.cpu and hw.acpi if anyone's interested, though of >course all the HDA logging has chopped off the head of the verbose dmesg >with its standard 64K buffersize (61753 bytes recorded) - grrr! > Btw you should be able to set kern.msgbufsize to something bigger from the loader prompt... >cheers, Ian HTH, Juergen
Want to link to this message? Use this URL: <https://mail-archive.FreeBSD.org/cgi/mid.cgi?201302021231.r12CVnRo032404>