On 01/17/2016 07:03 AM, Thorsten Leemhuis wrote:
Since Linux 4.0 the CPU fan speed is going up and down on Dell Studio
XPS 8000 and 8100 for unknown reasons. The 8100 was already
blacklisted in Commit a4b45b25f1 This patch blacklists the XPS 8000.
Without further debugging on the affected machine, it is not possible
to find the problem. For more details see
https://bugzilla.kernel.org/show_bug.cgi?id=100121
Signed-off-by: Thorsten Leemhuis <linux@xxxxxxxxxxxxx>
Acked-by: Pali Rohár <pali.rohar@xxxxxxxxx>
Cc: stable@xxxxxxxxxxxxxxx # v4.0+, will need backport
Applied.
Thanks,
Guenter
--- linux-4.4.org/drivers/hwmon/dell-smm-hwmon.c 2016-01-11 00:01:32.000000000 +0100
+++ linux-4.4.org/drivers/hwmon/dell-smm-hwmon.c 2016-01-13 08:48:56.957208506 +0100
@@ -932,6 +932,17 @@
static struct dmi_system_id i8k_blacklist_dmi_table[] __initdata = {
{
/*
+ * CPU fan speed going up and down on Dell Studio XPS 8000
+ * for unknown reasons.
+ */
+ .ident = "Dell Studio XPS 8000",
+ .matches = {
+ DMI_EXACT_MATCH(DMI_SYS_VENDOR, "Dell Inc."),
+ DMI_EXACT_MATCH(DMI_PRODUCT_NAME, "Studio XPS 8000"),
+ },
+ },
+ {
+ /*
* CPU fan speed going up and down on Dell Studio XPS 8100
* for unknown reasons.
*/
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