Maybe worth noting that since I have this output:
lspci -nnd ::03xx
00:02.0 VGA compatible controller [0300]: Intel Corporation Crystal Well
Integrated Graphics Controller [8086:0d26] (rev 08)
01:00.0 VGA compatible controller [0300]: NVIDIA Corporation GK107M
[GeForce GT 750M Mac Edition] [10de:0fe9] (rev a1)
I can boot with this: i915.force_probe=!0d26 xe.force_probe=0d26
But then I get this in my dmesg:
[ 3.045178] ------------[ cut here ]------------
[ 3.045183] Unpatched return thunk in use. This should not happen!
[ 3.045184] WARNING: arch/x86/kernel/cpu/bugs.c:3737 at
__warn_thunk+0x10/0x20, CPU#1: (udev-worker)/353
[ 3.045192] Modules linked in: nouveau(+) wl(POE+) snd_hda_codec_generic
snd_hda_codec_hdmi kvm(+) drm_ttm_helper gpu_sched drm_gpuvm drm_exec btusb
mxm_wmi snd_hda_intel drm_buddy i2c_algo_bit btrtl snd_intel_dspcfg ttm
btintel iTCO_wdt snd_seq_midi snd_intel_sdw_acpi ghash_clmulni_intel joydev
uas rapl snd_seq_midi_event hid_generic drm_display_helper snd_hda_codec
facetimehd(OE+) btbcm nvme videobuf2_dma_sg btmtk intel_pmc_bxt
spi_intel_platform snd_hwdep videobuf2_memops spi_intel iTCO_vendor_support
applesmc cec bluetooth sbs(+) snd_rawmidi usb_storage intel_cstate
nvme_core bcm5974 usbhid efi_pstore videobuf2_v4l2 i2c_i801 cfg80211 hid
snd_hda_core videodev rc_core lpc_ich apple_mfi_fastcharge i2c_mux
drm_client_lib i2c_smbus videobuf2_common snd_seq snd_pcm drm_kms_helper mc
thunderbolt sbshc snd_seq_device snd_timer acpi_als drm snd
industrialio_triggered_buffer apple_gmux mei_me kfifo_buf industrialio
video mei soundcore wmi mac_hid dm_mirror dm_region_hash dm_log tcp_bbr
sch_fq_codel pkcs8_key_parser msr
[ 3.045271] parport_pc ppdev lp parport nfnetlink dmi_sysfs autofs4
aesni_intel
[ 3.045281] CPU: 1 UID: 0 PID: 353 Comm: (udev-worker) Tainted: P
OE 6.19.0-rc4 #1 PREEMPT(lazy)
[ 3.045285] Tainted: [P]=PROPRIETARY_MODULE, [O]=OOT_MODULE,
[E]=UNSIGNED_MODULE
[ 3.045286] Hardware name: Apple Inc.
MacBookPro11,3/Mac-2BD1B31983FE1663, BIOS 432.60.3.0.0 10/27/2021
[ 3.045288] RIP: 0010:__warn_thunk+0x10/0x20
[ 3.045293] Code: 50 00 5d 48 98 c3 cc cc cc cc 90 90 90 90 90 90 90 90
90 90 90 90 90 90 90 90 0f 1f 44 00 00 55 48 89 e5 48 8d 3d 10 e1 45 02
<67> 48 0f b9 3a 5d c3 cc cc cc cc 0f 1f 44 00 00 90 90 90 90 90 90
[ 3.045295] RSP: 0018:ffffb9dc8061fa18 EFLAGS: 00010202
[ 3.045298] RAX: 0000000000000010 RBX: 0000000000000000 RCX:
0000000000000000
[ 3.045299] RDX: 0000000000000000 RSI: ffffffffc190fc0f RDI:
ffffffff9114d790
[ 3.045301] RBP: ffffb9dc8061fa18 R08: 0000000000000020 R09:
0000000000000000
[ 3.045303] R10: ffffb9dc8061fb38 R11: ffff9303437ea2e0 R12:
ffffffffc190fc0f
[ 3.045304] R13: 0000000000000000 R14: ffffffffc0b9b010 R15:
0000000000000000
[ 3.045306] FS: 00007f8662192980(0000) GS:ffff93071d83d000(0000)
knlGS:0000000000000000
[ 3.045308] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 3.045310] CR2: 00007f8661386000 CR3: 0000000117fd7001 CR4:
00000000001706f0
[ 3.045312] Call Trace:
[ 3.045321] <TASK>
[ 3.045323] warn_thunk_thunk+0x16/0x30
[ 3.045329] getvar+0x20/0x70 [wl]
[ 3.045382] wl_module_init+0x17/0xa0 [wl]
[ 3.045418] do_one_initcall+0x59/0x310
[ 3.045424] do_init_module+0x6a/0x260
[ 3.045427] ? module_decompress_cleanup+0x4f/0x70
[ 3.045431] load_module+0x1de9/0x2060
[ 3.045437] init_module_from_file+0xe9/0x170
[ 3.045439] ? init_module_from_file+0xe9/0x170
[ 3.045444] idempotent_init_module+0x10e/0x2f0
[ 3.045448] __x64_sys_finit_module+0x73/0xf0
[ 3.045450] ? __secure_computing+0x7c/0xd0
[ 3.045455] x64_sys_call+0x15b8/0x1da0
[ 3.045458] do_syscall_64+0x6d/0x650
[ 3.045462] ? switch_fpu_return+0x5c/0xe0
[ 3.045466] ? do_syscall_64+0x29b/0x650
[ 3.045469] ? irqentry_exit+0x3a/0x510
[ 3.045473] ? exc_page_fault+0x90/0x1a0
[ 3.045477] entry_SYSCALL_64_after_hwframe+0x76/0x7e
[ 3.045480] RIP: 0033:0x7f8662cd68cd
[ 3.045483] Code: ff c3 66 2e 0f 1f 84 00 00 00 00 00 90 f3 0f 1e fa 48
89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05
<48> 3d 01 f0 ff ff 73 01 c3 48 8b 0d 13 f5 0f 00 f7 d8 64 89 01 48
[ 3.045485] RSP: 002b:00007ffd8fc05cd8 EFLAGS: 00000246 ORIG_RAX:
0000000000000139
[ 3.045488] RAX: ffffffffffffffda RBX: 00005591fd6d3990 RCX:
00007f8662cd68cd
[ 3.045489] RDX: 0000000000000004 RSI: 00007f866146c336 RDI:
000000000000001d
[ 3.045491] RBP: 00007ffd8fc05d70 R08: 0000000000000000 R09:
00005591fd6d6d00
[ 3.045492] R10: 0000000000000000 R11: 0000000000000246 R12:
00007f866146c336
[ 3.045494] R13: 0000000000020000 R14: 00005591fd6d59c0 R15:
00005591fd6d6cc0
[ 3.045497] </TASK>
[ 3.045499] ---[ end trace 0000000000000000 ]---
On Tue, Jan 6, 2026 at 12:07 PM 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.
>
> [ 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
> [ 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?
>
> Regards,
>
> Satadru Pramanik
>
