From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from pigeon.gentoo.org ([208.92.234.80] helo=lists.gentoo.org) by finch.gentoo.org with esmtp (Exim 4.60) (envelope-from ) id 1N2i5H-0003NO-QQ for garchives@archives.gentoo.org; Tue, 27 Oct 2009 09:11:20 +0000 Received: from pigeon.gentoo.org (localhost [127.0.0.1]) by pigeon.gentoo.org (Postfix) with SMTP id 4752DE088C; Tue, 27 Oct 2009 09:11:18 +0000 (UTC) Received: from mail-ew0-f206.google.com (mail-ew0-f206.google.com [209.85.219.206]) by pigeon.gentoo.org (Postfix) with ESMTP id 0D127E088C for ; Tue, 27 Oct 2009 09:11:17 +0000 (UTC) Received: by ewy2 with SMTP id 2so443182ewy.34 for ; Tue, 27 Oct 2009 02:11:17 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=gamma; h=domainkey-signature:received:received:from:to:subject:date :user-agent:cc:references:in-reply-to:mime-version:content-type :content-transfer-encoding:message-id; bh=7JJcYpyj7S2JYsjJMCHLGVYa3+K3rPQVhZJLg3xk02A=; b=AcM/amsMfEL7b89HbqNUWhepi2zmR7H1MFm0wJb0QegVABhiQY9J2IHXMck9FwjB+d 2+STgPnhUmitqU1p0keOSQQ7SDgmslcnrFk73/jReGfAR2sgPiCwHn4jycDhi2O0f4lk 5/Kzi96juvOawU1l58pZ8Xo0xCAeEoyI79b6Q= DomainKey-Signature: a=rsa-sha1; c=nofws; d=gmail.com; s=gamma; h=from:to:subject:date:user-agent:cc:references:in-reply-to :mime-version:content-type:content-transfer-encoding:message-id; b=Dc06zr+LNv9B9kWdOuWYl809Z0sYtnxhWa1rCepzWS9W/CIyTQIC4xqsfXPCdU4g8E CO9nt6GGDEf5y6I8ZwbXvNqG5CfS5mFnchOz9Fw5cUzDzWPgyo2WTmTvcC3y+E3G9IYZ 9gP5trSHFQvz7qSZxGSuw/1vjs4CXalQImSQM= Received: by 10.216.89.13 with SMTP id b13mr5688707wef.45.1256634677490; Tue, 27 Oct 2009 02:11:17 -0700 (PDT) Received: from nazgul.localnet (dustpuppy.is.co.za [196.14.169.11]) by mx.google.com with ESMTPS id 10sm9385598eyd.4.2009.10.27.02.11.16 (version=TLSv1/SSLv3 cipher=RC4-MD5); Tue, 27 Oct 2009 02:11:16 -0700 (PDT) From: Alan McKinnon To: gentoo-user@lists.gentoo.org Subject: Re: [gentoo-user] strange dmesg output - RESOLVED Date: Tue, 27 Oct 2009 11:10:13 +0200 User-Agent: KMail/1.12.2 (Linux/2.6.31-zen4; KDE/4.3.2; x86_64; ; ) Cc: Maxim Wexler References: In-Reply-To: Precedence: bulk List-Post: List-Help: List-Unsubscribe: List-Subscribe: List-Id: Gentoo Linux mail X-BeenThere: gentoo-user@lists.gentoo.org Reply-to: gentoo-user@lists.gentoo.org MIME-Version: 1.0 Content-Type: Text/Plain; charset="iso-8859-1" Content-Transfer-Encoding: 7bit Message-Id: <200910271110.13489.alan.mckinnon@gmail.com> X-Archives-Salt: 1b6531a8-3d2c-4b13-8804-4a3f85089506 X-Archives-Hash: cf6a3812b73b9f8941b44499f6a83883 On Tuesday 27 October 2009 03:38:53 Maxim Wexler wrote: > Ok, this is too weird. While mucking around in the kernel I noticed > that the scroll back buffer wasn't set. So I configured it and gave it > 128 bytes to play with. It's 128 kilo bytes just btw :-) > Sez I, well at least I'll be able to scroll > back to the start of all that verbiage. That's the only change I've > made since turning USB_STORAGE debugging off. > > After a reboot, dmesg behaved and gives me a complete rundown on > startup all the way back to the prompt! > > So, since in the digital world, things don't "just happen", can > someone enlighten me, or anyone else who's interested, in the > connection between the scrollback buffer and usb-storage, if any? There isn't a connection. Why do you think there is one? You enabled scrollback so now the console has retained enough of the kernel console output that you can scroll back to the beginning without using all 128K. Symbol: VGACON_SOFT_SCROLLBACK_SIZE [=256] Prompt: Scrollback Buffer Size (in KB) Defined at drivers/video/console/Kconfig:37 Depends on: HAS_IOMEM && VT && VGACON_SOFT_SCROLLBACK Symbol: VGACON_SOFT_SCROLLBACK [=y] Prompt: Enable Scrollback Buffer in System RAM Defined at drivers/video/console/Kconfig:22 Depends on: HAS_IOMEM && VT && VGA_CONSOLE Symbol: USB_STORAGE [=m] Prompt: USB Mass Storage support Defined at drivers/usb/storage/Kconfig:9 Depends on: USB_SUPPORT && USB && SCSI Symbol: USB_STORAGE_DEBUG [=n] Prompt: USB Mass Storage verbose debug Defined at drivers/usb/storage/Kconfig:27 Depends on: USB_SUPPORT && USB_STORAGE Symbol: USB_SUPPORT [=y] Prompt: USB support Defined at drivers/usb/Kconfig:5 Depends on: HAS_IOMEM -- alan dot mckinnon at gmail dot com