From mboxrd@z Thu Jan 1 00:00:00 1970 From: Len Brown Subject: [PATCH 17/77] ACPI: Remove Dell Optiplex GX240 from the ACPI blacklist Date: Sun, 22 Jul 2007 05:14:02 -0400 Message-ID: <11850957192175-git-send-email-len.brown@intel.com> References: <11850957022956-git-send-email-len.brown@intel.com> <11850957033938-git-send-email-len.brown@intel.com> <11850957043270-git-send-email-len.brown@intel.com> <11850957053842-git-send-email-len.brown@intel.com> <11850957062754-git-send-email-len.brown@intel.com> <11850957073494-git-send-email-len.brown@intel.com> <1185095708928-git-send-email-len.brown@intel.com> <11850957093360-git-send-email-len.brown@intel.com> <11850957102641-git-send-email-len.brown@intel.com> <11850957111797-git-send-email-len.brown@intel.com> <11850957123807-git-send-email-len.brown@intel.com> <11850957131802-git-send-email-len.brown@intel.com> <1185095714699-git-send-email-len.brown@intel.com> <1185095715506-git-send-email-len.brown@intel.com> <11850957162801-git-send-email-len.brown@intel.com> <11850957173842-git-send-email-len.brown@intel.com> <11850957181201-git-send-email-len.brown@intel.com> Return-path: Received: from mga01.intel.com ([192.55.52.88]:5737 "EHLO mga01.intel.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1761017AbXGVJPV (ORCPT ); Sun, 22 Jul 2007 05:15:21 -0400 In-Reply-To: <11850957181201-git-send-email-len.brown@intel.com> Message-Id: <4d2fafd17a325b3f4f5f9edb1211bc7f4c311269.1185095456.git.len.brown@intel.com> In-Reply-To: References: Sender: linux-acpi-owner@vger.kernel.org List-Id: linux-acpi@vger.kernel.org To: linux-acpi@vger.kernel.org Cc: Tear , Andrew Morton , Len Brown 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. 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. Signed-off-by: Andrew Morton Signed-off-by: Len Brown --- arch/i386/kernel/acpi/boot.c | 8 -------- 1 files changed, 0 insertions(+), 8 deletions(-) diff --git a/arch/i386/kernel/acpi/boot.c b/arch/i386/kernel/acpi/boot.c index 280898b..a2c8b9e 100644 --- a/arch/i386/kernel/acpi/boot.c +++ b/arch/i386/kernel/acpi/boot.c @@ -971,14 +971,6 @@ static struct dmi_system_id __initdata acpi_dmi_table[] = { }, { .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"), -- 1.5.3.rc2.22.g69a9b