Date: Thu, 08 Nov 2007 11:17:39 -0800 From: "Kevin Oberman" <oberman@es.net> To: acpi@freebsd.org Subject: Deep sleep modes on 7-BETA locks up syscons Message-ID: <20071108191739.9E90D45029@ptavv.es.net>
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--==_Exmh_1194549459_29324P Content-Type: text/plain; charset=us-ascii Content-Disposition: inline I have already sent much of this to -current@, but ACPI is clearly involved and I'll admit that I don't fully understand all of the implications of sleep (Cx) states. Recently I discovered that I could no longer boot up on battery. (As it turned out, I could not shut down, either.) The boot proceeds to devd which kicks off power_profile which resets the cx_state. I use performance_cx_lowest="HIGH" and economy_cx_lowest="LOW" which drops cx_state to C4 when on battery. States of C1 and C2 don't cause a problem and C3 and C4 do. (C4 is only available when on battery.) At that point things slow to a crawl. I have never had the patience to see if it would ever finish the boot, but it took many minutes just to start ipfw and load the rules. When anything made it to the screen, it appeared several lines at a time. If I am up and switch cx_state to C3 or C4 while running X, things work fine, but, if I exit X while the cx_state is still C3 or C4, the system switches back to the vty and spits out a few lines before locking up again. After several minutes I was able to log in to another vty and change the cx_state which started things running normally. This is a T43 (Pentium-M @2GHz) running ULE on 7-BETA2 of Nov. 4. The problem has not been there for too long, but I can't say for sure when I last ran on battery when not in X. I don't know if this is a syscons issue or some ugly interaction between syscons and ULE or an ACPI issue. If anyone else has seen this or has any ideas, I'd love to hear about it. -- R. Kevin Oberman, Network Engineer Energy Sciences Network (ESnet) Ernest O. Lawrence Berkeley National Laboratory (Berkeley Lab) E-mail: oberman@es.net Phone: +1 510 486-8634 Key fingerprint:059B 2DDF 031C 9BA3 14A4 EADA 927D EBB3 987B 3751 --==_Exmh_1194549459_29324P Content-Type: application/pgp-signature -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.7 (FreeBSD) Comment: Exmh version 2.5 06/03/2002 iD8DBQFHM2DTkn3rs5h7N1ERAkBpAJ9OPjfbWFIDF/DbFwhSNBQ/Wi3/lACfZ5ss DnWyIau7teg2OdYgfOT4HVg= =M5wx -----END PGP SIGNATURE----- --==_Exmh_1194549459_29324P--
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