[Bug 82381] New: Dell latitude E5440 fails to turn back laptop display (eDP) backlight after DPMS off
bugzilla-daemon at bugzilla.kernel.org
bugzilla-daemon at bugzilla.kernel.org
Thu Aug 14 06:42:50 PDT 2014
https://bugzilla.kernel.org/show_bug.cgi?id=82381
Bug ID: 82381
Summary: Dell latitude E5440 fails to turn back laptop display
(eDP) backlight after DPMS off
Product: Drivers
Version: 2.5
Kernel Version: 3.16.1
Hardware: i386
OS: Linux
Tree: Mainline
Status: NEW
Severity: normal
Priority: P1
Component: Video(DRI - Intel)
Assignee: intel-gfx-bugs at lists.freedesktop.org
Reporter: leva at ecentrum.hu
CC: intel-gfx-bugs at lists.freedesktop.org
Regression: No
The display itself is working, but without backlight. If I preset a white
background before DPMS, then turn off every light source in the room, and then
wink a bit at the screen, I can see the display content, but there is no
backlight.
kernel: [ 7804.736123] ------------[ cut here ]------------
kernel: [ 7804.736146] WARNING: CPU: 1 PID: 4557 at
drivers/gpu/drm/i915/intel_dp.c:3122 intel_dp_link_down+0x176/0x1e0 [i915]()
kernel: [ 7804.736148] Modules linked in: pci_stub vboxpci(O) vboxnetadp(O)
vboxnetflt(O) vboxdrv(O) psmouse rfcomm bnep ipv6 iptable_mangle ipt_MASQUERADE
iptable_nat nf_nat_ipv4 nf_nat xt_tcpudp xt_limit nf_conntrack_ipv4
nf_defrag_ipv4 xt_multiport xt_conntrack nf_conntrack iptable_filter ip_tables
x_tables nbd tun cpufreq_ondemand speedstep_lib lp fuse snd_hda_codec_hdmi
i2c_dev i915 btusb x86_pkg_temp_thermal intel_powerclamp bluetooth nouveau ttm
drm_kms_helper intel_gtt snd_hda_codec_realtek snd_hda_codec_generic coretemp
processor drm joydev agpgart thermal video uvcvideo videobuf2_vmalloc
videobuf2_memops videobuf2_core v4l2_common snd_hda_intel thermal_sys videodev
i2c_i801 sdhci_pci dell_laptop kvm_intel i2c_algo_bit sdhci mmc_core
snd_hda_controller e1000e i2c_core ptp pps_core iwlwifi cfg80211 rfkill lpc_ich
snd_hda_codec snd_hwdep snd_pcm ehci_pci snd_timer dell_wmi mxm_wmi
sparse_keymap wmi ppdev serio_raw mei_me mei dcdbas evdev kvm snd soundcore ac
battery button hwmon crc32_pclmul crc32c_intel microcode parport_pc parport
loop hid_generic usbhid hid xhci_hcd ehci_hcd uhci_hcd [last unloaded: psmouse]
kernel: [ 7804.736209] CPU: 1 PID: 4557 Comm: X Tainted: G W O
3.16.1-smp #31
kernel: [ 7804.736210] Hardware name: Dell Inc. Latitude E5440/08RCYC, BIOS A01
09/18/2013
kernel: [ 7804.736212] 00000000 00000000 edbdbcac c1b00807 00000000 edbdbcdc
c1044d7e c1cbb48c
kernel: [ 7804.736216] 00000001 000011cd fb5c49a0 00000c32 fb58fa16 fb58fa16
f0d38000 f10fbc80
kernel: [ 7804.736220] f10fa800 edbdbcec c1044e42 00000009 00000000 edbdbd14
fb58fa16 fb58f660
kernel: [ 7804.736224] Call Trace:
kernel: [ 7804.736229] [<c1b00807>] dump_stack+0x41/0x52
kernel: [ 7804.736233] [<c1044d7e>] warn_slowpath_common+0x7e/0xa0
kernel: [ 7804.736245] [<fb58fa16>] ? intel_dp_link_down+0x176/0x1e0 [i915]
kernel: [ 7804.736255] [<fb58fa16>] ? intel_dp_link_down+0x176/0x1e0 [i915]
kernel: [ 7804.736258] [<c1044e42>] warn_slowpath_null+0x22/0x30
kernel: [ 7804.736268] [<fb58fa16>] intel_dp_link_down+0x176/0x1e0 [i915]
kernel: [ 7804.736278] [<fb58f660>] ? intel_dp_dpcd_read_wake+0x30/0x50 [i915]
kernel: [ 7804.736289] [<fb5946a7>] intel_dp_complete_link_train+0xd7/0x2e0
[i915]
kernel: [ 7804.736300] [<fb58d390>] intel_ddi_pre_enable+0x110/0x190 [i915]
kernel: [ 7804.736311] [<fb5774d2>] haswell_crtc_enable+0x372/0x920 [i915]
kernel: [ 7804.736314] [<c1b07a64>] ? __ww_mutex_lock+0x14/0x75
kernel: [ 7804.736325] [<fb579228>] intel_crtc_update_dpms+0x78/0x90 [i915]
kernel: [ 7804.736336] [<fb57ccad>] intel_connector_dpms+0x3d/0x60 [i915]
kernel: [ 7804.736343] [<f989161f>]
drm_mode_obj_set_property_ioctl+0x47f/0x4b0 [drm]
kernel: [ 7804.736349] [<f988be25>] ? drm_modeset_unlock_all+0x35/0x60 [drm]
kernel: [ 7804.736355] [<f9891683>]
drm_mode_connector_property_set_ioctl+0x33/0x40 [drm]
kernel: [ 7804.736360] [<f9891650>] ?
drm_mode_obj_set_property_ioctl+0x4b0/0x4b0 [drm]
kernel: [ 7804.736365] [<f98824bf>] drm_ioctl+0x1af/0x510 [drm]
kernel: [ 7804.736368] [<c1058fce>] ? wake_up_worker+0x1e/0x30
kernel: [ 7804.736370] [<c105a974>] ? insert_work+0x54/0x90
kernel: [ 7804.736375] [<f9891650>] ?
drm_mode_obj_set_property_ioctl+0x4b0/0x4b0 [drm]
kernel: [ 7804.736379] [<c119ddc2>] ? sysfs_notify+0x42/0x80
kernel: [ 7804.736382] [<c15b542a>] ? backlight_generate_event+0x4a/0x60
kernel: [ 7804.736385] [<c15b5c50>] ? brightness_store+0x60/0xb0
kernel: [ 7804.736387] [<c15b5bf0>] ? fb_notifier_callback+0x110/0x110
kernel: [ 7804.736392] [<f9882310>] ? drm_ioctl_flags+0x40/0x40 [drm]
kernel: [ 7804.736395] [<c114fa92>] do_vfs_ioctl+0x2f2/0x4d0
kernel: [ 7804.736397] [<c119d338>] ? kernfs_fop_release+0x38/0x40
kernel: [ 7804.736400] [<c156bd3b>] ? lockref_put_or_lock+0xb/0x30
kernel: [ 7804.736402] [<c1152dee>] ? dput+0x1e/0x140
kernel: [ 7804.736404] [<c115a0bd>] ? mntput+0x1d/0x30
kernel: [ 7804.736407] [<c1140cc4>] ? __fput+0x154/0x1b0
kernel: [ 7804.736410] [<c114fcd0>] SyS_ioctl+0x60/0x90
kernel: [ 7804.736413] [<c1b09492>] syscall_call+0x7/0x7
kernel: [ 7804.736415] [<c1b00000>] ? create_subvol+0x19f/0x7bf
kernel: [ 7804.736417] ---[ end trace 195ee6eb1963d5d1 ]---
kernel: [ 7804.870301] ------------[ cut here ]------------
kernel: [ 7804.870313] WARNING: CPU: 1 PID: 4557 at
drivers/gpu/drm/i915/intel_dp.c:3122 intel_dp_link_down+0x176/0x1e0 [i915]()
kernel: [ 7804.870315] Modules linked in: pci_stub vboxpci(O) vboxnetadp(O)
vboxnetflt(O) vboxdrv(O) psmouse rfcomm bnep ipv6 iptable_mangle ipt_MASQUERADE
iptable_nat nf_nat_ipv4 nf_nat xt_tcpudp xt_limit nf_conntrack_ipv4
nf_defrag_ipv4 xt_multiport xt_conntrack nf_conntrack iptable_filter ip_tables
x_tables nbd tun cpufreq_ondemand speedstep_lib lp fuse snd_hda_codec_hdmi
i2c_dev i915 btusb x86_pkg_temp_thermal intel_powerclamp bluetooth nouveau ttm
drm_kms_helper intel_gtt snd_hda_codec_realtek snd_hda_codec_generic coretemp
processor drm joydev agpgart thermal video uvcvideo videobuf2_vmalloc
videobuf2_memops videobuf2_core v4l2_common snd_hda_intel thermal_sys videodev
i2c_i801 sdhci_pci dell_laptop kvm_intel i2c_algo_bit sdhci mmc_core
snd_hda_controller e1000e i2c_core ptp pps_core iwlwifi cfg80211 rfkill lpc_ich
snd_hda_codec snd_hwdep snd_pcm ehci_pci snd_timer dell_wmi mxm_wmi
sparse_keymap wmi ppdev serio_raw mei_me mei dcdbas evdev kvm snd soundcore ac
battery button hwmon crc32_pclmul crc32c_intel microcode parport_pc parport
loop hid_generic usbhid hid xhci_hcd ehci_hcd uhci_hcd [last unloaded: psmouse]
kernel: [ 7804.870362] CPU: 1 PID: 4557 Comm: X Tainted: G W O
3.16.1-smp #31
kernel: [ 7804.870363] Hardware name: Dell Inc. Latitude E5440/08RCYC, BIOS A01
09/18/2013
kernel: [ 7804.870364] 00000000 00000000 edbdbcac c1b00807 00000000 edbdbcdc
c1044d7e c1cbb48c
kernel: [ 7804.870368] 00000001 000011cd fb5c49a0 00000c32 fb58fa16 fb58fa16
f0d38000 f10fbc80
kernel: [ 7804.870372] f10fa800 edbdbcec c1044e42 00000009 00000000 edbdbd14
fb58fa16 fb58f660
kernel: [ 7804.870376] Call Trace:
kernel: [ 7804.870379] [<c1b00807>] dump_stack+0x41/0x52
kernel: [ 7804.870382] [<c1044d7e>] warn_slowpath_common+0x7e/0xa0
kernel: [ 7804.870392] [<fb58fa16>] ? intel_dp_link_down+0x176/0x1e0 [i915]
kernel: [ 7804.870402] [<fb58fa16>] ? intel_dp_link_down+0x176/0x1e0 [i915]
kernel: [ 7804.870405] [<c1044e42>] warn_slowpath_null+0x22/0x30
kernel: [ 7804.870415] [<fb58fa16>] intel_dp_link_down+0x176/0x1e0 [i915]
kernel: [ 7804.870425] [<fb58f660>] ? intel_dp_dpcd_read_wake+0x30/0x50 [i915]
kernel: [ 7804.870435] [<fb5946a7>] intel_dp_complete_link_train+0xd7/0x2e0
[i915]
kernel: [ 7804.870446] [<fb58d390>] intel_ddi_pre_enable+0x110/0x190 [i915]
kernel: [ 7804.870457] [<fb5774d2>] haswell_crtc_enable+0x372/0x920 [i915]
kernel: [ 7804.870459] [<c1b07a64>] ? __ww_mutex_lock+0x14/0x75
kernel: [ 7804.870470] [<fb579228>] intel_crtc_update_dpms+0x78/0x90 [i915]
kernel: [ 7804.870480] [<fb57ccad>] intel_connector_dpms+0x3d/0x60 [i915]
kernel: [ 7804.870486] [<f989161f>]
drm_mode_obj_set_property_ioctl+0x47f/0x4b0 [drm]
kernel: [ 7804.870492] [<f988be25>] ? drm_modeset_unlock_all+0x35/0x60 [drm]
kernel: [ 7804.870498] [<f9891683>]
drm_mode_connector_property_set_ioctl+0x33/0x40 [drm]
kernel: [ 7804.870503] [<f9891650>] ?
drm_mode_obj_set_property_ioctl+0x4b0/0x4b0 [drm]
kernel: [ 7804.870507] [<f98824bf>] drm_ioctl+0x1af/0x510 [drm]
kernel: [ 7804.870510] [<c1058fce>] ? wake_up_worker+0x1e/0x30
kernel: [ 7804.870512] [<c105a974>] ? insert_work+0x54/0x90
kernel: [ 7804.870517] [<f9891650>] ?
drm_mode_obj_set_property_ioctl+0x4b0/0x4b0 [drm]
kernel: [ 7804.870520] [<c119ddc2>] ? sysfs_notify+0x42/0x80
kernel: [ 7804.870523] [<c15b542a>] ? backlight_generate_event+0x4a/0x60
kernel: [ 7804.870525] [<c15b5c50>] ? brightness_store+0x60/0xb0
kernel: [ 7804.870528] [<c15b5bf0>] ? fb_notifier_callback+0x110/0x110
kernel: [ 7804.870532] [<f9882310>] ? drm_ioctl_flags+0x40/0x40 [drm]
kernel: [ 7804.870535] [<c114fa92>] do_vfs_ioctl+0x2f2/0x4d0
kernel: [ 7804.870537] [<c119d338>] ? kernfs_fop_release+0x38/0x40
kernel: [ 7804.870539] [<c156bd3b>] ? lockref_put_or_lock+0xb/0x30
kernel: [ 7804.870541] [<c1152dee>] ? dput+0x1e/0x140
kernel: [ 7804.870543] [<c115a0bd>] ? mntput+0x1d/0x30
kernel: [ 7804.870546] [<c1140cc4>] ? __fput+0x154/0x1b0
kernel: [ 7804.870549] [<c114fcd0>] SyS_ioctl+0x60/0x90
kernel: [ 7804.870551] [<c1b09492>] syscall_call+0x7/0x7
kernel: [ 7804.870553] [<c1b00000>] ? create_subvol+0x19f/0x7bf
kernel: [ 7804.870555] ---[ end trace 195ee6eb1963d5d2 ]---
$ lspci -v
00:00.0 Host bridge: Intel Corporation Haswell-ULT DRAM Controller (rev 0b)
Subsystem: Dell Device 05de
Flags: bus master, fast devsel, latency 0
Capabilities: <access denied>
00:02.0 VGA compatible controller: Intel Corporation Haswell-ULT Integrated
Graphics Controller (rev 0b) (prog-if 00 [VGA controller])
Subsystem: Dell Device 05de
Flags: bus master, fast devsel, latency 0, IRQ 62
Memory at f6400000 (64-bit, non-prefetchable) [size=4M]
Memory at d0000000 (64-bit, prefetchable) [size=256M]
I/O ports at f000 [size=64]
Expansion ROM at <unassigned> [disabled]
Capabilities: <access denied>
Kernel driver in use: i915
Kernel modules: i915
00:03.0 Audio device: Intel Corporation Device 0a0c (rev 0b)
Subsystem: Dell Device 05de
Flags: bus master, fast devsel, latency 0, IRQ 63
Memory at f7434000 (64-bit, non-prefetchable) [size=16K]
Capabilities: <access denied>
Kernel driver in use: snd_hda_intel
Kernel modules: snd_hda_intel
00:14.0 USB controller: Intel Corporation Lynx Point-LP USB xHCI HC (rev 04)
(prog-if 30 [XHCI])
Subsystem: Dell Device 05de
Flags: bus master, medium devsel, latency 0, IRQ 57
Memory at f7420000 (64-bit, non-prefetchable) [size=64K]
Capabilities: <access denied>
Kernel driver in use: xhci_hcd
Kernel modules: xhci_hcd
00:16.0 Communication controller: Intel Corporation Lynx Point-LP HECI #0 (rev
04)
Subsystem: Dell Device 05de
Flags: bus master, fast devsel, latency 0, IRQ 58
Memory at f743f000 (64-bit, non-prefetchable) [size=32]
Capabilities: <access denied>
Kernel driver in use: mei_me
Kernel modules: mei_me
00:19.0 Ethernet controller: Intel Corporation Ethernet Connection I218-LM (rev
04)
Subsystem: Dell Device 05de
Flags: bus master, fast devsel, latency 0, IRQ 59
Memory at f7400000 (32-bit, non-prefetchable) [size=128K]
Memory at f743c000 (32-bit, non-prefetchable) [size=4K]
I/O ports at f080 [size=32]
Capabilities: <access denied>
Kernel driver in use: e1000e
Kernel modules: e1000e
00:1b.0 Audio device: Intel Corporation Lynx Point-LP HD Audio Controller (rev
04)
Subsystem: Dell Device 05de
Flags: bus master, fast devsel, latency 0, IRQ 60
Memory at f7430000 (64-bit, non-prefetchable) [size=16K]
Capabilities: <access denied>
Kernel driver in use: snd_hda_intel
Kernel modules: snd_hda_intel
00:1c.0 PCI bridge: Intel Corporation Lynx Point-LP PCI Express Root Port 1
(rev e4) (prog-if 00 [Normal decode])
Flags: bus master, fast devsel, latency 0
Bus: primary=00, secondary=01, subordinate=01, sec-latency=0
Memory behind bridge: f7300000-f73fffff
Capabilities: <access denied>
Kernel driver in use: pcieport
Kernel modules: shpchp
00:1c.3 PCI bridge: Intel Corporation Lynx Point-LP PCI Express Root Port 4
(rev e4) (prog-if 00 [Normal decode])
Flags: bus master, fast devsel, latency 0
Bus: primary=00, secondary=02, subordinate=02, sec-latency=0
Memory behind bridge: f7200000-f72fffff
Capabilities: <access denied>
Kernel driver in use: pcieport
Kernel modules: shpchp
00:1c.4 PCI bridge: Intel Corporation Lynx Point-LP PCI Express Root Port 5
(rev e4) (prog-if 00 [Normal decode])
Flags: bus master, fast devsel, latency 0
Bus: primary=00, secondary=03, subordinate=03, sec-latency=0
I/O behind bridge: 0000e000-0000efff
Memory behind bridge: f5000000-f60fffff
Prefetchable memory behind bridge: 00000000e0000000-00000000f1ffffff
Capabilities: <access denied>
Kernel driver in use: pcieport
Kernel modules: shpchp
00:1c.5 PCI bridge: Intel Corporation Lynx Point-LP PCI Express Root Port 6
(rev e4) (prog-if 00 [Normal decode])
Flags: bus master, fast devsel, latency 0
Bus: primary=00, secondary=04, subordinate=04, sec-latency=0
I/O behind bridge: 0000d000-0000dfff
Memory behind bridge: f6800000-f71fffff
Prefetchable memory behind bridge: 00000000f2100000-00000000f2afffff
Capabilities: <access denied>
Kernel driver in use: pcieport
Kernel modules: shpchp
00:1d.0 USB controller: Intel Corporation Lynx Point-LP USB EHCI #1 (rev 04)
(prog-if 20 [EHCI])
Subsystem: Dell Device 05de
Flags: bus master, medium devsel, latency 0, IRQ 21
Memory at f743b000 (32-bit, non-prefetchable) [size=1K]
Capabilities: <access denied>
Kernel driver in use: ehci-pci
Kernel modules: ehci_pci
00:1f.0 ISA bridge: Intel Corporation Lynx Point-LP LPC Controller (rev 04)
Subsystem: Dell Device 05de
Flags: bus master, medium devsel, latency 0
Capabilities: <access denied>
Kernel driver in use: lpc_ich
Kernel modules: lpc_ich
00:1f.2 SATA controller: Intel Corporation Lynx Point-LP SATA Controller 1
[AHCI mode] (rev 04) (prog-if 01 [AHCI 1.0])
Subsystem: Dell Device 05de
Flags: bus master, 66MHz, medium devsel, latency 0, IRQ 56
I/O ports at f0d0 [size=8]
I/O ports at f0c0 [size=4]
I/O ports at f0b0 [size=8]
I/O ports at f0a0 [size=4]
I/O ports at f060 [size=32]
Memory at f743a000 (32-bit, non-prefetchable) [size=2K]
Capabilities: <access denied>
Kernel driver in use: ahci
00:1f.3 SMBus: Intel Corporation Lynx Point-LP SMBus Controller (rev 04)
Subsystem: Dell Device 05de
Flags: medium devsel, IRQ 17
Memory at f7439000 (64-bit, non-prefetchable) [size=256]
I/O ports at f040 [size=32]
Kernel modules: i2c_i801
01:00.0 SD Host controller: O2 Micro, Inc. Device 8520 (rev 01) (prog-if 01)
Subsystem: Dell Device 05de
Flags: bus master, fast devsel, latency 0, IRQ 16
Memory at f7301000 (32-bit, non-prefetchable) [size=4K]
Memory at f7300000 (32-bit, non-prefetchable) [size=2K]
Capabilities: <access denied>
Kernel driver in use: sdhci-pci
Kernel modules: sdhci_pci
02:00.0 Network controller: Intel Corporation Intel(R) Dual Band Wireless-AC
7260 (rev 73)
Subsystem: Intel Corporation Device 4470
Flags: fast devsel, IRQ 19
Memory at f7200000 (64-bit, non-prefetchable) [size=8K]
Capabilities: <access denied>
Kernel modules: iwlwifi
03:00.0 3D controller: NVIDIA Corporation GF117M [GeForce 610M/710M / GT
620M/625M/630M/720M] (rev a1)
Subsystem: Dell Device 05de
Flags: bus master, fast devsel, latency 0, IRQ 61
Memory at f5000000 (32-bit, non-prefetchable) [size=16M]
Memory at e0000000 (64-bit, prefetchable) [size=256M]
Memory at f0000000 (64-bit, prefetchable) [size=32M]
I/O ports at e000 [size=128]
Expansion ROM at f6000000 [disabled] [size=512K]
Capabilities: <access denied>
Kernel driver in use: nouveau
Kernel modules: nvidiafb, nouveau
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