Date: Fri, 9 Jul 1999 08:00:03 -0700 (PDT) From: Kazutaka YOKOTA <yokota@zodiac.mech.utsunomiya-u.ac.jp> To: freebsd-bugs@FreeBSD.org Subject: Re: kern/11941: Crashing OS when changing between console screens Message-ID: <199907091500.IAA66639@freefall.freebsd.org>
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The following reply was made to PR kern/11941; it has been noted by GNATS. From: Kazutaka YOKOTA <yokota@zodiac.mech.utsunomiya-u.ac.jp> To: als@fl.net.au Cc: FreeBSD-gnats-submit@freebsd.org, yokota@zodiac.mech.utsunomiya-u.ac.jp Subject: Re: kern/11941: Crashing OS when changing between console screens Date: Fri, 09 Jul 1999 23:56:40 +0900 >>Number: 11941 >>Category: kern >>Synopsis: FreeBSD box reboots itself when changing screens at the conso >le [...] >>Originator: Andrew Snow >>Release: FreeBSD 3.1-RELEASE i386 >>Organization: >No organisation >>Environment: > >FreeBSD 3.0 and 3.1-RELEASE, Cyrix 6x86 P166+ processor, Gigabyte HX chipset >motherboard, 64MB system RAM, Tekram DC-390F (ncr) SCSI controller >with IBM ultrawide SCSI hard drive. ed1 and de0 PCI network cards. > >Video card: >vga0: <Cirrus Logic GD5434 SVGA controller> rev 0x26 int a irq 9 on pci0.10.0 > >Console video mode for one or more screens is often set to 80x50 from 80x25 >with the vidcontrol utility. > >>Description: > >When at the console and changing screens (using the Alt+F1/F2/.. keystrokes), >very occasionally the system pauses for a few seconds then restarts. No >helpful information is found in any system log files. > >>How-To-Repeat: > >It has only been experienced 3 times by this user. Once was whilst running >3.0-RELEASE and the most recent two times were in a 3.1-RELEASE >installation. It has only been experienced with this particular >motherboard/video card combination (it never happened on a different >motherboard but same video card, earlier, whilst running 3.0-RELEASE). > >It _seems_ to only occur when one console screen is running in say 80x50 >video mode, and the other in 80x25 (that was the situation the most >recent time it happened). Alt+F3 was pressed and the video display >appeared corrupted for a few moments, and then the machine rebooted itself. Was the user by any chance switching between vtys quite quickly? Would you possibly send us output from the `dmesg' command and `vidcontrol -i mode' command on this 3.1-RELEASE system, and the kernel configuration file if you are not running the GENERIC kernel? They might reveal something. Kazu yokota@FreeBSD.org >>Fix: > >My workaround has been to not change console screens too much (or >change console video modes as it is the changing between screens of >different video modes that is suspected to be related to the problem). To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-bugs" in the body of the message
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