Thank you. It just occurred to me that I did file a bug at https://gitlab.freedesktop.org/drm/i915/kernel/-/issues/13803 for this issue with kernel 6.14, and then the issue went away. With 6.18.1 I don't see this warning.
But it has returned, and thus I have added a subsequent comment at https://gitlab.freedesktop.org/drm/i915/kernel/-/issues/13803#note_3261088 Regards, Satadru On Wed, Jan 7, 2026 at 5:33 AM Jani Nikula <[email protected]> wrote: > On Tue, 06 Jan 2026, Satadru Pramanik <[email protected]> wrote: > > Hello all, I'm newly getting this in my dmesg on my MacBookPro11,3 after > > updating from 6.19.0-rc3 to 6.19.0-rc4 on Ubuntu 25.10. I'm using the > > nouveau driver for my display, but this warning appears to be from i915, > > which my laptop also may be using for some portion of display enablement. > > AFAICS there were no related changes in the drm subsystem between -rc3 > and -rc4. I suspect something else changed. If you think otherwise, > please bisect. > > > [ 200.760128] ------------[ cut here ]------------ > > [ 200.760132] i915 0000:00:02.0: [drm] PCH PWM1 enabled > > [ 200.760134] WARNING: > > drivers/gpu/drm/i915/display/intel_display_power.c:1234 at > > hsw_enable_pc8+0x8a4/0xb10 [i915], CPU#0: kworker/u32:6/1378 > > [ 200.760351] Modules linked in: snd_seq_dummy snd_hrtimer > > scsi_transport_iscsi qrtr ccm algif_aead des3_ede_x86_64 des_generic > libdes > > md4 rfcomm cmac algif_hash algif_skcipher af_alg bnep blocklayoutdriver > > nfsv4 nfs lockd grace nfs_localio netfs sunrpc binfmt_misc nls_iso8859_1 > > cmdlinepart spi_nor mtd snd_hda_codec_intelhdmi intel_rapl_msr zfs(POE) > > intel_rapl_common x86_pkg_temp_thermal intel_powerclamp nouveau > input_leds > > i915 spl(OE) snd_hda_codec_cs420x snd_hda_codec_generic > > snd_hda_codec_nvhdmi snd_hda_codec_hdmi hid_apple drm_ttm_helper coretemp > > facetimehd(OE) snd_hda_intel gpu_sched btusb videobuf2_dma_sg > > snd_intel_dspcfg drm_gpuvm videobuf2_memops btrtl snd_intel_sdw_acpi > > videobuf2_v4l2 snd_seq_midi snd_hda_codec btintel snd_seq_midi_event > > drm_exec drm_buddy iTCO_wdt videodev kvm_intel btbcm mxm_wmi i2c_algo_bit > > btmtk snd_hwdep intel_pmc_bxt snd_rawmidi spi_intel_platform wl(POE) > joydev > > hid_generic videobuf2_common kvm spi_intel snd_hda_core > iTCO_vendor_support > > applesmc ghash_clmulni_intel nvme ttm rapl bluetooth > > [ 200.760418] snd_seq intel_cstate uas usbhid drm_display_helper > snd_pcm > > nvme_core cfg80211 cec efi_pstore rc_core hid mc bcm5974 sbs thunderbolt > > apple_mfi_fastcharge drm_client_lib i2c_i801 drm_kms_helper i2c_mux > > usb_storage i2c_smbus lpc_ich sbshc snd_timer apple_gmux snd_seq_device > > acpi_als industrialio_triggered_buffer mei_me kfifo_buf drm snd > > industrialio mei soundcore video wmi mac_hid dm_mirror dm_region_hash > > dm_log tcp_bbr sch_fq_codel pkcs8_key_parser msr parport_pc ppdev lp > > parport nfnetlink dmi_sysfs autofs4 aesni_intel > > [ 200.760461] CPU: 0 UID: 0 PID: 1378 Comm: kworker/u32:6 Tainted: P > U > > W OE 6.19.0-rc4 #1 PREEMPT(lazy) > > [ 200.760466] Tainted: [P]=PROPRIETARY_MODULE, [U]=USER, [W]=WARN, > > [O]=OOT_MODULE, [E]=UNSIGNED_MODULE > > Basically all bets are off with the proprietary modules. Can you > reproduce without? > > > [ 200.760468] Hardware name: Apple Inc. > > MacBookPro11,3/Mac-2BD1B31983FE1663, BIOS 432.60.3.0.0 10/27/2021 > > [ 200.760470] Workqueue: pm pm_runtime_work > > [ 200.760478] Sched_ext: lavd_1.0.20_g3c8138b8_x86_64_unknown_linux_gnu > > (enabled+all), task: runnable_at=+0ms > > [ 200.760480] RIP: 0010:hsw_enable_pc8+0x8aa/0xb10 [i915] > > [ 200.760653] Code: 32 12 00 48 85 ff 74 04 48 8b 7f 08 4c 8b 67 50 4d > 85 > > e4 75 03 4c 8b 27 e8 e3 73 a7 e4 48 8d 3d dc 03 30 00 4c 89 e2 48 89 c6 > > <67> 48 0f b9 3a e9 df f9 ff ff 48 8b 3b 80 bb 4b 14 00 00 00 0f 84 > > [ 200.760655] RSP: 0018:ffffaf668250fc68 EFLAGS: 00010282 > > [ 200.760658] RAX: ffffffffc1d688a4 RBX: ffff920740f62000 RCX: > > ffffffffc180f0d0 > > [ 200.760660] RDX: ffff920742008030 RSI: ffffffffc1d688a4 RDI: > > ffffffffc1c038d0 > > [ 200.760661] RBP: ffffaf668250fc90 R08: 0000000000000002 R09: > > 0000000000000064 > > [ 200.760663] R10: 0000000000000000 R11: 0000000000000001 R12: > > ffff920742008030 > > [ 200.760664] R13: ffff920740ed4000 R14: 0000000000000000 R15: > > ffff920740ed4000 > > [ 200.760666] FS: 0000000000000000(0000) GS:ffff920b06bfd000(0000) > > knlGS:0000000000000000 > > [ 200.760668] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 > > [ 200.760669] CR2: 00007f72423b701c CR3: 00000001777eb004 CR4: > > 00000000001726f0 > > [ 200.760671] Call Trace: > > [ 200.760673] <TASK> > > [ 200.760678] intel_display_power_suspend+0x61/0x80 [i915] > > [ 200.760852] intel_runtime_suspend+0xd7/0x230 [i915] > > [ 200.760963] ? __pfx_pci_pm_runtime_suspend+0x10/0x10 > > [ 200.760970] pci_pm_runtime_suspend+0x6a/0x1a0 > > [ 200.760974] __rpm_callback+0x4b/0x1f0 > > [ 200.760979] ? __pfx_pci_pm_runtime_suspend+0x10/0x10 > > [ 200.760983] rpm_callback+0x6f/0x80 > > [ 200.760986] rpm_suspend+0xe1/0x5e0 > > [ 200.760990] ? __schedule+0x44b/0x1650 > > [ 200.760996] pm_runtime_work+0x91/0xa0 > > [ 200.761000] process_one_work+0x188/0x360 > > [ 200.761005] worker_thread+0x327/0x460 > > [ 200.761007] ? __pfx_worker_thread+0x10/0x10 > > [ 200.761010] kthread+0x10b/0x220 > > [ 200.761015] ? __pfx_kthread+0x10/0x10 > > [ 200.761018] ret_from_fork+0x16e/0x1e0 > > [ 200.761023] ? __pfx_kthread+0x10/0x10 > > [ 200.761027] ret_from_fork_asm+0x1a/0x30 > > [ 200.761034] </TASK> > > [ 200.761035] ---[ end trace 0000000000000000 ]--- > > > > > > inxi -IG gives me this: > > Graphics: > > Device-1: Intel Crystal Well Integrated Graphics driver: i915 v: kernel > > Device-2: NVIDIA GK107M [GeForce GT 750M Mac Edition] driver: nouveau > > v: kernel > > Display: wayland server: X.Org v: 24.1.8 with: Xwayland v: 24.1.8 > > compositor: gnome-shell v: 49.0 driver: X: loaded: modesetting > > unloaded: fbdev,vesa dri: nouveau gpu: nouveau resolution: > > 3840x2400~60Hz > > API: EGL v: 1.5 drivers: crocus,nouveau,swrast > > platforms: gbm,wayland,x11,surfaceless,device > > API: OpenGL v: 4.6 compat-v: 4.3 vendor: mesa > > v: 25.3.2+git2512181741.a943c55aea0~q~mesarc2 renderer: NVE7 > > API: Vulkan v: 1.4.321 drivers: nvk,intel,llvmpipe > > surfaces: xcb,xlib,wayland > > Info: Tools: api: eglinfo, glxinfo, vulkaninfo x11: xdriinfo, xdpyinfo, > > xprop, xrandr > > Info: > > Memory: total: 16 GiB available: 15.53 GiB used: 4.85 GiB (31.2%) > > Processes: 468 Uptime: 17m Shell: Bash inxi: 3.3.39 > > > > Please let me know if I'm sending this to the wrong list? > > In general, please report i915 issues as described at [1]. > > BR, > Jani. > > > [1] > https://drm.pages.freedesktop.org/intel-docs/how-to-file-i915-bugs.html > > > -- > Jani Nikula, Intel >
