From mboxrd@z Thu Jan 1 00:00:00 1970 From: Len Brown Subject: Re: [patch 6/6] Remove Dell Optiplex GX240 from the ACPI blacklist Date: Sat, 2 Jun 2007 00:41:08 -0400 Message-ID: <200706020041.08323.lenb@kernel.org> References: <200705232112.l4NLCUrC032160@shell0.pdx.osdl.net> Mime-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: 7bit Return-path: Received: from hera.kernel.org ([140.211.167.34]:33285 "EHLO hera.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751570AbXFBElR (ORCPT ); Sat, 2 Jun 2007 00:41:17 -0400 In-Reply-To: <200705232112.l4NLCUrC032160@shell0.pdx.osdl.net> Content-Disposition: inline Sender: linux-acpi-owner@vger.kernel.org List-Id: linux-acpi@vger.kernel.org To: akpm@linux-foundation.org Cc: linux-acpi@vger.kernel.org, tarrqt@yahoo.com Applied. thanks, -len On Wednesday 23 May 2007 17:12, akpm@linux-foundation.org wrote: > From: Tear > > I have a Dell Optiplex GX240 and when I boot Linux, ACPI gets set up by only > acpi=ht. dmesg shows the following line: > > DELL GX240 detected: force use of acpi=ht > > Everything seemed to be fine. However, I discovered that everything is not > fine. The USB controller works so slowly that copying a few (uncached) 1 > megabyte large photos from a USB-enabled digital camera takes many minutes > instead of a couple of seconds. > > I am using Linux 2.6.21.1 on a Debian 4.0 ("Etch") system. > > I thought that this might be related to ACPI. So I tried to boot with _only_ > "acpi=force" appended to the kernel command line. Voila, the USB controller > started to work at full speed and copying photos from my digital camera took > only seconds. > > I tested the system with "acpi=force" and could not find anything which did > not work. So, can we please remove Dell Optiplex GX240 from the blacklist in > > ..../arch/i386/kernel/acpi/boot.c > > ? The attached patch does just that: It removes Dell Optiplex GX240 from the > ACPI blacklist. > > I thought that this might be related to interrupts and APIC as well. (Note > that this is APIC, not ACPI.) I tried booting with _only_ "noapic" and > "nolapic" appended to the command line. Again, the USB controller started to > work at full speed. > > Cc: Len Brown > Signed-off-by: Andrew Morton > --- > > arch/i386/kernel/acpi/boot.c | 8 -------- > 1 files changed, 8 deletions(-) > > diff -puN arch/i386/kernel/acpi/boot.c~remove-dell-optiplex-gx240-from-the-acpi-blacklist arch/i386/kernel/acpi/boot.c > --- a/arch/i386/kernel/acpi/boot.c~remove-dell-optiplex-gx240-from-the-acpi-blacklist > +++ a/arch/i386/kernel/acpi/boot.c > @@ -971,14 +971,6 @@ static struct dmi_system_id __initdata a > }, > { > .callback = force_acpi_ht, > - .ident = "DELL GX240", > - .matches = { > - DMI_MATCH(DMI_BOARD_VENDOR, "Dell Computer Corporation"), > - DMI_MATCH(DMI_BOARD_NAME, "OptiPlex GX240"), > - }, > - }, > - { > - .callback = force_acpi_ht, > .ident = "HP VISUALIZE NT Workstation", > .matches = { > DMI_MATCH(DMI_BOARD_VENDOR, "Hewlett-Packard"), > _ > - > To unsubscribe from this list: send the line "unsubscribe linux-acpi" in > the body of a message to majordomo@vger.kernel.org > More majordomo info at http://vger.kernel.org/majordomo-info.html >