From mboxrd@z Thu Jan 1 00:00:00 1970 From: Jani Nikula Subject: Re: WARNING on i915 - intel_panel Date: Mon, 26 May 2014 12:22:29 +0300 Message-ID: <8761ks28tm.fsf@intel.com> References: Mime-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Return-path: Received: from mga01.intel.com (mga01.intel.com [192.55.52.88]) by gabe.freedesktop.org (Postfix) with ESMTP id 956D06E327 for ; Mon, 26 May 2014 02:22:32 -0700 (PDT) In-Reply-To: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: intel-gfx-bounces@lists.freedesktop.org Sender: "Intel-gfx" To: Pedro Ribeiro , intel-gfx@lists.freedesktop.org List-Id: intel-gfx@lists.freedesktop.org On Sat, 24 May 2014, Pedro Ribeiro wrote: > Hi, > > I'm getting this error consistently with the Debian 3.14.4 after > resuming from hibernation: Does this ever happen on a fresh boot or when resuming from suspend to ram? BR, Jani. > > [ 931.032142] ------------[ cut here ]------------ > [ 931.032209] WARNING: CPU: 0 PID: 4715 at > /build/linux-Zc5oK7/linux-3.14.4/drivers/gpu/drm/i915/intel_panel.c:723 > i965_enable_backlight+0x122/0x150 [i915]() > [ 931.032219] backlight already enabled > [ 931.032223] Modules linked in: ctr ccm cpufreq_stats > cpufreq_userspace cpufreq_conservative cpufreq_powersave pci_stub > vboxpci(O) vboxnetadp(O) vboxnetflt(O) vboxdrv(O) binfmt_misc > nf_conntrack_ipv6 nf_defrag_ipv6 ip6table_filter ip6_tables xt_tcpudp > xt_conntrack iptable_filter iptable_nat nf_conntrack_ipv4 > nf_defrag_ipv4 nf_nat_ipv4 nf_nat nf_conntrack ip_tables x_tables fuse > vmwgfx ttm vmxnet3 tp_smapi(O) thinkpad_ec(O) loop ppdev lp btusb > bluetooth 6lowpan_iphc crc16 snd_hda_codec_conexant > snd_hda_codec_generic coretemp kvm_intel uvcvideo kvm > videobuf2_vmalloc videobuf2_memops videobuf2_core videodev media > psmouse serio_raw arc4 evdev iwldvm snd_hda_intel snd_hda_codec > snd_hwdep snd_pcm_oss thinkpad_acpi mac80211 snd_mixer_oss nvram > snd_pcm snd_seq_midi i2c_i801 snd_seq_midi_event lpc_ich snd_rawmidi > mfd_core snd_seq snd_seq_device snd_timer iwlwifi cfg80211 snd wmi > soundcore rfkill battery ac parport_pc tpm_tis parport i915 tpm video > drm_kms_helper drm i2c_algo_bit i2c_core acpi_cpufreq mei_me mei > processor button xfs crc32c libcrc32c lzo sg hid_generic usbhid hid > sd_mod crct10dif_generic sr_mod crc_t10dif cdrom crct10dif_common > firewire_ohci firewire_core crc_itu_t ahci libahci libata scsi_mod > thermal thermal_sys uhci_hcd ehci_pci ehci_hcd usbcore usb_common > e1000e ptp pps_core > [ 931.032448] CPU: 0 PID: 4715 Comm: kworker/u8:89 Tainted: G > O 3.14-1-amd64 #1 Debian 3.14.4-1 > [ 931.032456] Hardware name: LENOVO 7417PLU/7417PLU, BIOS 7VET95WW > (3.25 ) 10/10/2012 > [ 931.032470] Workqueue: events_unbound async_run_entry_fn > [ 931.032476] 0000000000000009 ffffffff814b9b42 ffff8800a6369af8 > ffffffff8105f0a2 > [ 931.032488] ffff880232b04000 ffff8800a6369b48 ffff8802301ac000 > 00000000e0000000 > [ 931.032498] ffff8800b870d000 ffffffff8105f107 ffffffffa0392f9b > ffffffff00000018 > [ 931.032508] Call Trace: > [ 931.032522] [] ? dump_stack+0x41/0x51 > [ 931.032532] [] ? warn_slowpath_common+0x72/0x90 > [ 931.032541] [] ? warn_slowpath_fmt+0x47/0x50 > [ 931.032576] [] ? gen4_read32+0x32/0xa0 [i915] > [ 931.032609] [] ? i965_enable_backlight+0x122/0x150 [i915] > [ 931.032644] [] ? > intel_panel_enable_backlight+0x9c/0xe0 [i915] > [ 931.032676] [] ? gen4_write64+0x90/0x90 [i915] > [ 931.032709] [] ? i9xx_crtc_enable+0x2e1/0x400 [i915] > [ 931.032743] [] ? __intel_set_mode+0x85e/0x15a0 [i915] > [ 931.032779] [] ? > intel_modeset_setup_hw_state+0xb09/0xc10 [i915] > [ 931.032808] [] ? __i915_drm_thaw+0x15a/0x210 [i915] > [ 931.032834] [] ? i915_resume+0x51/0x70 [i915] > [ 931.032844] [] ? pci_pm_suspend_noirq+0x190/0x190 > [ 931.032854] [] ? dpm_run_callback+0x2e/0x70 > [ 931.032862] [] ? device_resume+0x8c/0x180 > [ 931.032870] [] ? async_resume+0x14/0x40 > [ 931.032880] [] ? async_run_entry_fn+0x2d/0x120 > [ 931.032890] [] ? process_one_work+0x16d/0x420 > [ 931.032899] [] ? worker_thread+0x116/0x3b0 > [ 931.032908] [] ? rescuer_thread+0x330/0x330 > [ 931.032917] [] ? kthread+0xc1/0xe0 > [ 931.032925] [] ? kthread_create_on_node+0x180/0x180 > [ 931.032934] [] ? ret_from_fork+0x7c/0xb0 > [ 931.032943] [] ? kthread_create_on_node+0x180/0x180 > [ 931.032950] ---[ end trace a83af26b25b25474 ]--- > > My hardware is a Lenovo T400 with a GM45. > > Does this mean anything to you? Please let me know if there is > anything else you need. > > Regards, > Pedro > _______________________________________________ > Intel-gfx mailing list > Intel-gfx@lists.freedesktop.org > http://lists.freedesktop.org/mailman/listinfo/intel-gfx -- Jani Nikula, Intel Open Source Technology Center