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authorTear <tarrqt@yahoo.com>2007-05-23 14:12:30 -0700
committerLen Brown <len.brown@intel.com>2007-06-02 00:40:37 -0400
commit4d2fafd17a325b3f4f5f9edb1211bc7f4c311269 (patch)
treeea61965484ab3f88a756df755cc41dbaddc5c6a0
parentf285e3d329ce68cc355fadf4ab2c8f34d7f264cb (diff)
ACPI: Remove Dell Optiplex GX240 from the ACPI blacklist
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 <akpm@linux-foundation.org> Signed-off-by: Len Brown <len.brown@intel.com>
-rw-r--r--arch/i386/kernel/acpi/boot.c8
1 files changed, 0 insertions, 8 deletions
diff --git a/arch/i386/kernel/acpi/boot.c b/arch/i386/kernel/acpi/boot.c
index 280898b045b..a2c8b9efd70 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"),