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From: srinivas pandruvada To: Thomas Renninger Cc: linux-pm@vger.kernel.org, ez2blost@yahoo.com Date: Wed, 05 Nov 2025 10:27:01 -0800 In-Reply-To: <5615342.jMkzrH9lRO@linux.fritz.box> References: <2764104.vuYhMxLoTh@localhost.localdomain> <356b1c77ef385158d062ad2ecebfa275dc663017.camel@linux.intel.com> <5615342.jMkzrH9lRO@linux.fritz.box> Content-Type: multipart/mixed; boundary="=-zwuTUIE9zIpeCjPXys6B" User-Agent: Evolution 3.56.2 (3.56.2-2.fc42) Precedence: bulk X-Mailing-List: linux-pm@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 --=-zwuTUIE9zIpeCjPXys6B Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: quoted-printable On Wed, 2025-11-05 at 15:55 +0100, Thomas Renninger wrote: > On Mittwoch, 5. November 2025 14:06:42 Mitteleurop=C3=A4ische Normalzeit > srinivas=20 > pandruvada wrote: > > Hi Thomas, > >=20 > > The BIOS shipped with system disabled turbo on boot and user had to > > manually force via the sysfs. With the new change that is not an > > option. >=20 > User (adding EZ, sorry for missing you out on initial post) > claims that cpuid shows: > So I ran the cpuid commend and it returned: > Thermal and Power Management Features (6): > =C2=A0=C2=A0=C2=A0=C2=A0=C2=A0 digital thermometer=C2=A0=C2=A0=C2=A0=C2= =A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0= =C2=A0=C2=A0=C2=A0=C2=A0 =3D true > =C2=A0=C2=A0=C2=A0=C2=A0=C2=A0 Intel Turbo Boost Technology=C2=A0=C2=A0= =C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0 =3D true > =C2=A0... >=20 > Not sure whether this really is the same bit and whether this is > prove that=20 > IDA feature bit has been switched by Linux OS (by > SMI/firmware?)Fixes: 0fb5be7fea98 ("cpufreq: intel_pstate: Unchecked > MSR aceess in legacy mode") after=20 > initializing? >=20 > IDA cpufeature bit is not set in /proc/cpuinfo >=20 > EZ probably can do the one or other msr read/write if you need > someone tests. >=20 If the BIOS does it correctly there is a way to know as the limits can be dynamic. Here probably we need to reevaluate again. Try the attached change and check if this brings back the old hack. Thanks, Srinivas > Good luck, >=20 > =C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0 Thomas > >=20 > > We are trying to contact the manufacturer, but no solution yet. >=20 > That is appreciated! --=-zwuTUIE9zIpeCjPXys6B Content-Disposition: attachment; filename*0=0001-cpufreq-intel_pstate-Reevaluate-IDA-presence-on-no_t.pat; filename*1=ch Content-Transfer-Encoding: base64 Content-Type: text/x-patch; name="0001-cpufreq-intel_pstate-Reevaluate-IDA-presence-on-no_t.patch"; charset="UTF-8" RnJvbSA0MDVkMjdlODcxZjdiYzg1YTc4NmY4NDg3N2EzNWRhNTRjODEzYjM5IE1vbiBTZXAgMTcg MDA6MDA6MDAgMjAwMQpGcm9tOiBTcmluaXZhcyBQYW5kcnV2YWRhIDxzcmluaXZhcy5wYW5kcnV2 YWRhQGxpbnV4LmludGVsLmNvbT4KRGF0ZTogV2VkLCA1IE5vdiAyMDI1IDA5OjU3OjAzIC0wODAw ClN1YmplY3Q6IFtQQVRDSF0gY3B1ZnJlcTogaW50ZWxfcHN0YXRlOiBSZWV2YWx1YXRlIElEQSBw cmVzZW5jZSBvbiBub190dXJibwogYXR0cmlidXRlIGNoYW5nZQoKSWYgaGFyZHdhcmUgZGlzYWJs ZWQgSURBIChJbnRlbCBEeW5hbWljIEFjY2VsZXJhdGlvbiB0ZWNobm9sb2d5KSBmZWF0dXJlCmJl Zm9yZSBPUyBib290LCB0dXJibyBtb2RlIHN1cHBvcnQgd2lsbCBiZSBkaXNhYmxlZCBwZXJtYW5l bnRseS4gSW4gdGhpcwpjYXNlIENQVUlELjA2SDogRUFYWzFdIHJlcG9ydHMgMCBhbmQgYXR0cmli dXRlCiIvc3lzL2RldmljZXMvc3lzdGVtL2NwdS9pbnRlbF9wc3RhdGUvbm9fdHVyYm8iIHdpbGwg c2hvdyAiMSIgYW5kIHN0YXR1cwpjYW4ndCBiZSBjaGFuZ2VkIHRvICIwIi4KCldoZW4gbm9fdHVy Ym8gaXMgd3JpdHRlbiB3aXRoIDAsIGluIHRoaXMgY2FzZSBldmFsdWF0ZSBDUFVJRC4wNkg6IEVB WFsxXQphZ2Fpbi4gSWYgdGhlIGZlYXR1cmUgc3RhdHVzIGlzIGNoYW5nZWQgdG8gMSBwb3N0IE9T IGJvb3QgdGhlbiBhbGxvdyB0bwplbmFibGUgdHVyYm8gbW9kZS4KClNpZ25lZC1vZmYtYnk6IFNy aW5pdmFzIFBhbmRydXZhZGEgPHNyaW5pdmFzLnBhbmRydXZhZGFAbGludXguaW50ZWwuY29tPgot LS0KIGRyaXZlcnMvY3B1ZnJlcS9pbnRlbF9wc3RhdGUuYyB8IDcgKysrKysrLQogMSBmaWxlIGNo YW5nZWQsIDYgaW5zZXJ0aW9ucygrKSwgMSBkZWxldGlvbigtKQoKZGlmZiAtLWdpdCBhL2RyaXZl cnMvY3B1ZnJlcS9pbnRlbF9wc3RhdGUuYyBiL2RyaXZlcnMvY3B1ZnJlcS9pbnRlbF9wc3RhdGUu YwppbmRleCA0M2U4NDdlOWY3NDEuLjBlYzQ1YTYxMGI0NSAxMDA2NDQKLS0tIGEvZHJpdmVycy9j cHVmcmVxL2ludGVsX3BzdGF0ZS5jCisrKyBiL2RyaXZlcnMvY3B1ZnJlcS9pbnRlbF9wc3RhdGUu YwpAQCAtNTk2LDEwICs1OTYsMTUgQEAgc3RhdGljIHZvaWQgaW50ZWxfcHN0YXRlX2h5YnJpZF9o d3BfYWRqdXN0KHN0cnVjdCBjcHVkYXRhICpjcHUpCiAKIHN0YXRpYyBib29sIHR1cmJvX2lzX2Rp c2FibGVkKHZvaWQpCiB7CisJdW5zaWduZWQgaW50IGVheCwgZWJ4LCBlY3gsIGVkeDsKIAl1NjQg bWlzY19lbjsKIAotCWlmICghY3B1X2ZlYXR1cmVfZW5hYmxlZChYODZfRkVBVFVSRV9JREEpKQor CWVheCA9IDA7CisJY3B1aWQoNiwgJmVheCwgJmVieCwgJmVjeCwgJmVkeCk7CisJaWYgKCEoZWF4 ICYgQklUKDEpKSkgeworCQlwcl9pbmZvKCJUdXJibyBpcyBkaXNhYmxlZFxuIik7CiAJCXJldHVy biB0cnVlOworCX0KIAogCXJkbXNybChNU1JfSUEzMl9NSVNDX0VOQUJMRSwgbWlzY19lbik7CiAK LS0gCjIuNDMuMAoK --=-zwuTUIE9zIpeCjPXys6B--