From: bugzilla-daemon@kernel.org
To: linux-pm@vger.kernel.org
Subject: [Bug 221505] REGRESSION][amd_pstate] "EPP cannot be set under performance policy" (EBUSY) when switching to performance profile via PPD on 7.1
Date: Wed, 13 May 2026 19:14:56 +0000 [thread overview]
Message-ID: <bug-221505-137361-FjtMtlkOmP@https.bugzilla.kernel.org/> (raw)
In-Reply-To: <bug-221505-137361@https.bugzilla.kernel.org/>
https://bugzilla.kernel.org/show_bug.cgi?id=221505
--- Comment #10 from Sergey (sergeyluashkov@gmail.com) ---
(In reply to Mario Limonciello (AMD) from comment #9)
> > With amd_dynamic_epp=enable:
>
> I'm not sure why this is happening. What platform profiles does this other
> driver support?
>
> > With amd_dynamic_epp=disable (or no parameter):
>
> So you're still seeing this?
>
> [ 299.585428] amd_pstate: EPP cannot be set under performance policy
>
> Can I see the kernel log with dynamic debug for amd-pstate turned on? And
> also the output from the amd-pstate triage tool in amd-debug-tools.
With amd_dynamic_epp=enable:
cat /sys/devices/platform/asus-nb-wmi/platform-profile/platform-profile-25/name
asus-wmi
cat
/sys/devices/platform/asus-nb-wmi/platform-profile/platform-profile-25/profile
balanced
cat
/sys/devices/platform/asus-nb-wmi/platform-profile/platform-profile-25/choices
quiet balanced performance
With amd_dynamic_epp=disable (or no parameter):
[ 128.393895] amd_pstate: EPP cannot be set under performance policy
🐧 Arch Linux
🐧 Kernel: 7.1.0-rc2-1-mainline-gf9f16835d4dc-dirty
○ 'status': active
○ 'prefcore': enabled
🐧 ITMT: Y
💻 CPU: AMD RYZEN AI MAX+ 392 w/ Radeon 8060S
🔋 Per-CPU sysfs files
+---------+----------------+----------------------+----------------+--------------------+--------------------+---------------------------------+------------+---------+
| CPU # | CPU Min Freq | CPU Nonlinear Freq | CPU Max Freq | Scaling
Min Freq | Scaling Max Freq | Energy Performance Preference | Prefcore |
Boost |
|---------+----------------+----------------------+----------------+--------------------+--------------------+---------------------------------+------------+---------|
| 0 | 609334 | 1980334 | 3199000 |
609334 | 3199000 | power | 206 |
0 |
| 1 | 609334 | 1980334 | 3199000 |
609334 | 3199000 | power | 216 |
0 |
| 2 | 609334 | 1980334 | 3199000 |
609334 | 3199000 | power | 201 |
0 |
| 3 | 609334 | 1980334 | 3199000 |
609334 | 3199000 | power | 216 |
0 |
| 4 | 609334 | 1980334 | 3199000 |
609334 | 3199000 | power | 196 |
0 |
| 5 | 609334 | 1980334 | 3199000 |
609334 | 3199000 | power | 211 |
0 |
| 6 | 609334 | 1980334 | 3199000 |
609334 | 3199000 | power | 176 |
0 |
| 7 | 609334 | 1980334 | 3199000 |
609334 | 3199000 | power | 166 |
0 |
| 8 | 609334 | 1980334 | 3199000 |
609334 | 3199000 | power | 186 |
0 |
| 9 | 609334 | 1980334 | 3199000 |
609334 | 3199000 | power | 181 |
0 |
| 10 | 609334 | 1980334 | 3199000 |
609334 | 3199000 | power | 171 |
0 |
| 11 | 609334 | 1980334 | 3199000 |
609334 | 3199000 | power | 191 |
0 |
| 12 | 609334 | 1980334 | 3199000 |
609334 | 3199000 | power | 206 |
0 |
| 13 | 609334 | 1980334 | 3199000 |
609334 | 3199000 | power | 216 |
0 |
| 14 | 609334 | 1980334 | 3199000 |
609334 | 3199000 | power | 201 |
0 |
| 15 | 609334 | 1980334 | 3199000 |
609334 | 3199000 | power | 216 |
0 |
| 16 | 609334 | 1980334 | 3199000 |
609334 | 3199000 | power | 196 |
0 |
| 17 | 609334 | 1980334 | 3199000 |
609334 | 3199000 | power | 211 |
0 |
| 18 | 609334 | 1980334 | 3199000 |
609334 | 3199000 | power | 176 |
0 |
| 19 | 609334 | 1980334 | 3199000 |
609334 | 3199000 | power | 166 |
0 |
| 20 | 609334 | 1980334 | 3199000 |
609334 | 3199000 | power | 186 |
0 |
| 21 | 609334 | 1980334 | 3199000 |
609334 | 3199000 | power | 181 |
0 |
| 22 | 609334 | 1980334 | 3199000 |
609334 | 3199000 | power | 171 |
0 |
| 23 | 609334 | 1980334 | 3199000 |
609334 | 3199000 | power | 191 |
0 |
+---------+----------------+----------------------+----------------+--------------------+--------------------+---------------------------------+------------+---------+
🔋 CPPC MSRs
+---------+----------+----------+--------------------+---------+------------+
| CPU # | Enable | Status | Cap 1 | Cap 2 | Request |
|---------+----------+----------+--------------------+---------+------------|
| 0 | 1 | 0 | 0xce694114ce694114 | 0x0 | 0xff001569 |
| 1 | 1 | 0 | 0xd8694114d8694114 | 0x0 | 0xff001569 |
| 2 | 1 | 0 | 0xc9694114c9694114 | 0x0 | 0xff001569 |
| 3 | 1 | 0 | 0xd8694114d8694114 | 0x0 | 0xff001569 |
| 4 | 1 | 0 | 0xc4694114c4694114 | 0x0 | 0xff001569 |
| 5 | 1 | 0 | 0xd3694114d3694114 | 0x0 | 0xff001569 |
| 6 | 1 | 0 | 0xb0694114b0694114 | 0x0 | 0xff001569 |
| 7 | 1 | 0 | 0xa6694114a6694114 | 0x0 | 0xff001569 |
| 8 | 1 | 0 | 0xba694114ba694114 | 0x0 | 0xff001569 |
| 9 | 1 | 0 | 0xb5694114b5694114 | 0x0 | 0xff001569 |
| 10 | 1 | 0 | 0xab694114ab694114 | 0x0 | 0xff001569 |
| 11 | 1 | 0 | 0xbf694114bf694114 | 0x0 | 0xff001569 |
| 12 | 1 | 0 | 0xce694114 | 0x0 | 0xff001569 |
| 13 | 1 | 0 | 0xd8694114 | 0x0 | 0xff001569 |
| 14 | 1 | 0 | 0xc9694114 | 0x0 | 0xff001569 |
| 15 | 1 | 0 | 0xd8694114 | 0x0 | 0xff001569 |
| 16 | 1 | 0 | 0xc4694114 | 0x0 | 0xff001569 |
| 17 | 1 | 0 | 0xd3694114 | 0x0 | 0xff001569 |
| 18 | 1 | 0 | 0xb0694114 | 0x0 | 0xff001569 |
| 19 | 1 | 0 | 0xa6694114 | 0x0 | 0xff001569 |
| 20 | 1 | 0 | 0xba694114 | 0x0 | 0xff001569 |
| 21 | 1 | 0 | 0xb5694114 | 0x0 | 0xff001569 |
| 22 | 1 | 0 | 0xab694114 | 0x0 | 0xff001569 |
| 23 | 1 | 0 | 0xbf694114 | 0x0 | 0xff001569 |
+---------+----------+----------+--------------------+---------+------------+
🔋 MSR_AMD_CPPC_CAP1 (decoded)
+---------+---------------+------------------+----------------+----------------+
| CPU # | Lowest Perf | Nonlinear Perf | Nominal Perf | Highest Perf
|
|---------+---------------+------------------+----------------+----------------|
| 0 | 20 | 65 | 105 | 206
|
| 1 | 20 | 65 | 105 | 216
|
| 2 | 20 | 65 | 105 | 201
|
| 3 | 20 | 65 | 105 | 216
|
| 4 | 20 | 65 | 105 | 196
|
| 5 | 20 | 65 | 105 | 211
|
| 6 | 20 | 65 | 105 | 176
|
| 7 | 20 | 65 | 105 | 166
|
| 8 | 20 | 65 | 105 | 186
|
| 9 | 20 | 65 | 105 | 181
|
| 10 | 20 | 65 | 105 | 171
|
| 11 | 20 | 65 | 105 | 191
|
| 12 | 20 | 65 | 105 | 206
|
| 13 | 20 | 65 | 105 | 216
|
| 14 | 20 | 65 | 105 | 201
|
| 15 | 20 | 65 | 105 | 216
|
| 16 | 20 | 65 | 105 | 196
|
| 17 | 20 | 65 | 105 | 211
|
| 18 | 20 | 65 | 105 | 176
|
| 19 | 20 | 65 | 105 | 166
|
| 20 | 20 | 65 | 105 | 186
|
| 21 | 20 | 65 | 105 | 181
|
| 22 | 20 | 65 | 105 | 171
|
| 23 | 20 | 65 | 105 | 191
|
+---------+---------------+------------------+----------------+----------------+
🔋 MSR_AMD_CPPC_REQ (decoded)
+---------+------------+------------+----------------+---------------------------+
| CPU # | Min Perf | Max Perf | Desired Perf | Energy Performance
Perf |
|---------+------------+------------+----------------+---------------------------|
| 0 | 21 | 105 | 0 |
255 |
| 1 | 21 | 105 | 0 |
255 |
| 2 | 21 | 105 | 0 |
255 |
| 3 | 21 | 105 | 0 |
255 |
| 4 | 21 | 105 | 0 |
255 |
| 5 | 21 | 105 | 0 |
255 |
| 6 | 21 | 105 | 0 |
255 |
| 7 | 21 | 105 | 0 |
255 |
| 8 | 21 | 105 | 0 |
255 |
| 9 | 21 | 105 | 0 |
255 |
| 10 | 21 | 105 | 0 |
255 |
| 11 | 21 | 105 | 0 |
255 |
| 12 | 21 | 105 | 0 |
255 |
| 13 | 21 | 105 | 0 |
255 |
| 14 | 21 | 105 | 0 |
255 |
| 15 | 21 | 105 | 0 |
255 |
| 16 | 21 | 105 | 0 |
255 |
| 17 | 21 | 105 | 0 |
255 |
| 18 | 21 | 105 | 0 |
255 |
| 19 | 21 | 105 | 0 |
255 |
| 20 | 21 | 105 | 0 |
255 |
| 21 | 21 | 105 | 0 |
255 |
| 22 | 21 | 105 | 0 |
255 |
| 23 | 21 | 105 | 0 |
255 |
+---------+------------+------------+----------------+---------------------------+
--
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next prev parent reply other threads:[~2026-05-13 19:14 UTC|newest]
Thread overview: 12+ messages / expand[flat|nested] mbox.gz Atom feed top
2026-05-11 17:45 [Bug 221505] New: REGRESSION][amd_pstate] "EPP cannot be set under performance policy" (EBUSY) when switching to performance profile via PPD on 7.1 bugzilla-daemon
2026-05-11 20:15 ` [Bug 221505] " bugzilla-daemon
2026-05-13 6:17 ` bugzilla-daemon
2026-05-13 11:03 ` bugzilla-daemon
2026-05-13 15:39 ` bugzilla-daemon
2026-05-13 15:43 ` bugzilla-daemon
2026-05-13 16:57 ` bugzilla-daemon
2026-05-13 17:12 ` bugzilla-daemon
2026-05-13 18:41 ` bugzilla-daemon
2026-05-13 18:44 ` bugzilla-daemon
2026-05-13 19:14 ` bugzilla-daemon [this message]
2026-05-14 7:30 ` bugzilla-daemon
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