[Bug 80182] New: Regression: screen not resuming on kernel 3.14.6 and above

bugzilla-daemon at freedesktop.org bugzilla-daemon at freedesktop.org
Wed Jun 18 04:43:06 PDT 2014 

https://bugs.freedesktop.org/show_bug.cgi?id=80182

          Priority: medium
            Bug ID: 80182
                CC: intel-gfx-bugs at lists.freedesktop.org
          Assignee: intel-gfx-bugs at lists.freedesktop.org
           Summary: Regression: screen not resuming on kernel 3.14.6 and
                    above
        QA Contact: intel-gfx-bugs at lists.freedesktop.org
          Severity: normal
    Classification: Unclassified
                OS: All
          Reporter: marianoaliaga at gmail.com
          Hardware: Other
            Status: NEW
           Version: unspecified
         Component: DRM/Intel
           Product: DRI

When screen turns off after some inactivity, it doesn't resume on mouse move or
key press. This regression was introduced on kernel 3.14.6, and is present also
on 3.14.7 and 3.15.1. Running 3.14.5 works just fine.
This happens only on laptop screen. If there's an external monitor plugged, it
works ok.

Some information about my environment:

Ubuntu 12.04 on Lenovo T430
Linux 3.14.6-031406-generic
xserver-xorg-video-intel 2.17.0-1ubuntu4.4
libdrm-intel1 2.4.46-1ubuntu0.0.0.1

00:02.0 VGA compatible controller: Intel Corporation 3rd Gen Core processor
Graphics Controller (rev 09) (prog-if 00 [VGA controller])
    Subsystem: Lenovo Device 21f3
    Flags: bus master, fast devsel, latency 0, IRQ 43
    Memory at f0000000 (64-bit, non-prefetchable) [size=4M]
    Memory at e0000000 (64-bit, prefetchable) [size=256M]
    I/O ports at 5000 [size=64]
    Expansion ROM at <unassigned> [disabled]
    Capabilities: <access denied>
    Kernel driver in use: i915
    Kernel modules: i915

And here's the drm.debug=0xe info:

/* Screen lock */
Jun 17 11:27:25 e kernel: [  308.010264] [drm:intel_crtc_cursor_set], cursor
off

/* Screen turns off */
Jun 17 11:37:35 e kernel: [  918.467218]
[drm:intel_panel_actually_set_backlight], set backlight PWM = 0
Jun 17 11:37:35 e kernel: [  918.746612] [drm:intel_disable_shared_dpll],
disable PCH DPLL A (active 1, on? 1) for crtc 3
Jun 17 11:37:35 e kernel: [  918.746621] [drm:intel_disable_shared_dpll],
disabling PCH DPLL A
Jun 17 11:37:35 e kernel: [  918.747038] [drm:intel_update_fbc], no output,
disabling
Jun 17 11:37:35 e kernel: [  918.747053] [drm:check_encoder_state],
[ENCODER:10:LVDS-10]
Jun 17 11:37:35 e kernel: [  918.747056] [drm:check_encoder_state],
[ENCODER:16:DAC-16]
Jun 17 11:37:35 e kernel: [  918.747059] [drm:check_encoder_state],
[ENCODER:17:TMDS-17]
Jun 17 11:37:35 e kernel: [  918.747061] [drm:check_encoder_state],
[ENCODER:21:TMDS-21]
Jun 17 11:37:35 e kernel: [  918.747064] [drm:check_encoder_state],
[ENCODER:23:TMDS-23]
Jun 17 11:37:35 e kernel: [  918.747067] [drm:check_encoder_state],
[ENCODER:25:TMDS-25]
Jun 17 11:37:35 e kernel: [  918.747069] [drm:check_encoder_state],
[ENCODER:27:TMDS-27]
Jun 17 11:37:35 e kernel: [  918.747072] [drm:check_encoder_state],
[ENCODER:29:TMDS-29]
Jun 17 11:37:35 e kernel: [  918.747075] [drm:check_crtc_state], [CRTC:3]
Jun 17 11:37:35 e kernel: [  918.747078] [drm:check_crtc_state], [CRTC:5]
Jun 17 11:37:35 e kernel: [  918.747079] [drm:check_crtc_state], [CRTC:7]
Jun 17 11:37:35 e kernel: [  918.747080] [drm:check_shared_dpll_state], PCH
DPLL A
Jun 17 11:37:35 e kernel: [  918.747085] [drm:check_shared_dpll_state], PCH
DPLL B
Jun 17 11:37:35 e kernel: [  918.747121] [drm:intel_panel_get_backlight], get
backlight PWM = 0
Jun 17 11:37:35 e kernel: [  918.747138]
[drm:intel_backlight_device_update_status], updating intel_backlight,
brightness=0/4437
Jun 17 11:37:35 e kernel: [  918.747189]
[drm:intel_backlight_device_update_status], updating intel_backlight,
brightness=0/4437

/* Key press */
Jun 17 11:38:11 e kernel: [  955.090607] [drm:g4x_wait_for_vblank], vblank wait
timed out
Jun 17 11:38:11 e kernel: [  955.154645] [drm:g4x_wait_for_vblank], vblank wait
timed out
Jun 17 11:38:11 e kernel: [  955.154812] [drm:ivb_manual_fdi_link_train],
FDI_RX_IIR before link train 0x0
Jun 17 11:38:11 e kernel: [  955.154821] [drm:ivb_manual_fdi_link_train],
FDI_RX_IIR 0x100
Jun 17 11:38:11 e kernel: [  955.154824] [drm:ivb_manual_fdi_link_train], FDI
train 1 done, level 0.
Jun 17 11:38:11 e kernel: [  955.154832] [drm:ivb_manual_fdi_link_train],
FDI_RX_IIR 0x600
Jun 17 11:38:11 e kernel: [  955.154835] [drm:ivb_manual_fdi_link_train], FDI
train 2 done, level 0.
Jun 17 11:38:11 e kernel: [  955.154836] [drm:ivb_manual_fdi_link_train], FDI
train done.
Jun 17 11:38:11 e kernel: [  955.154840] [drm:ironlake_enable_shared_dpll],
enable PCH DPLL A (active 0, on? 0)for crtc 3
Jun 17 11:38:11 e kernel: [  955.154841] [drm:ironlake_enable_shared_dpll],
enabling PCH DPLL A
Jun 17 11:38:11 e kernel: [  955.156213] [drm:intel_update_fbc], disabled per
chip default
Jun 17 11:38:11 e kernel: [  955.162653] [drm:intel_panel_enable_backlight],
pipe A
Jun 17 11:38:11 e kernel: [  955.162663]
[drm:intel_panel_actually_set_backlight], set backlight PWM = 4437
Jun 17 11:38:12 e kernel: [  955.178646] [drm:intel_connector_check_state],
[CONNECTOR:9:LVDS-1]
Jun 17 11:38:12 e kernel: [  955.178663] [drm:check_encoder_state],
[ENCODER:10:LVDS-10]
Jun 17 11:38:12 e kernel: [  955.178667] [drm:check_encoder_state],
[ENCODER:16:DAC-16]
Jun 17 11:38:12 e kernel: [  955.178670] [drm:check_encoder_state],
[ENCODER:17:TMDS-17]
Jun 17 11:38:12 e kernel: [  955.178672] [drm:check_encoder_state],
[ENCODER:21:TMDS-21]
Jun 17 11:38:12 e kernel: [  955.178675] [drm:check_encoder_state],
[ENCODER:23:TMDS-23]
Jun 17 11:38:12 e kernel: [  955.178678] [drm:check_encoder_state],
[ENCODER:25:TMDS-25]
Jun 17 11:38:12 e kernel: [  955.178681] [drm:check_encoder_state],
[ENCODER:27:TMDS-27]
Jun 17 11:38:12 e kernel: [  955.178684] [drm:check_encoder_state],
[ENCODER:29:TMDS-29]
Jun 17 11:38:12 e kernel: [  955.178687] [drm:check_crtc_state], [CRTC:3]
Jun 17 11:38:12 e kernel: [  955.178701] [drm:check_crtc_state], [CRTC:5]
Jun 17 11:38:12 e kernel: [  955.178702] [drm:check_crtc_state], [CRTC:7]
Jun 17 11:38:12 e kernel: [  955.178704] [drm:check_shared_dpll_state], PCH
DPLL A
Jun 17 11:38:12 e kernel: [  955.178709] [drm:check_shared_dpll_state], PCH
DPLL B
Jun 17 11:38:12 e kernel: [  955.178797]
[drm:intel_backlight_device_update_status], updating intel_backlight,
brightness=0/4437
Jun 17 11:38:12 e kernel: [  955.178800]
[drm:intel_panel_actually_set_backlight], set backlight PWM = 0

/* Screen still off */


I think this is a kernel issue. If this is not the right place for reporting
it, please let me know where should I report.


Mariano

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