Messages in this thread | | | From | Denys Fedoryschenko <> | Subject | KMS + i915 + modeset=1 fails to detect correct output on laptop, blank/black screen | Date | Tue, 27 Oct 2009 02:54:26 +0200 |
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Hi
I try to compile 2.6.32-rc5-git3 with enabled CONFIG_DRM_I915_KMS, but got black screen on boot. After short investigation, i notice that i915.modeset=0 is fine for me.
Here is what i got with modeset=1 [ 1.053570] [drm] Initialized drm 1.1.0 20060810 [ 1.063552] [drm] set up 7M of stolen space [ 1.608955] [drm] TV-14: set mode NTSC 480i 0 [ 1.758390] fb0: inteldrmfb frame buffer device [ 1.771866] [drm] Initialized i915 1.6.0 20080730 for 0000:00:02.0 on minor 0
I did just short patch to test my idea, and it was right, wrong output was detected:
static enum drm_connector_status intel_tv_detect(struct drm_connector *connector) { struct drm_crtc *crtc; struct drm_display_mode mode; struct intel_output *intel_output = to_intel_output(connector); struct intel_tv_priv *tv_priv = intel_output->dev_priv; struct drm_encoder *encoder = &intel_output->enc; int dpms_mode; int type = tv_priv->type;
+ return connector_status_disconnected; +
It works! So case is invalid detection of output device. With patch it is: [ 0.620081] [drm] Initialized drm 1.1.0 20060810 [ 0.632764] [drm] set up 7M of stolen space [ 0.879117] fb0: inteldrmfb frame buffer device [ 0.893140] [drm] Initialized i915 1.6.0 20080730 for 0000:00:02.0 on minor 0
My hardware is:
00:00.0 Host bridge: Intel Corporation Mobile PM965/GM965/GL960 Memory Controller Hub (rev 03) 00:02.0 VGA compatible controller: Intel Corporation Mobile GM965/GL960 Integrated Graphics Controller (rev 03) 00:02.1 Display controller: Intel Corporation Mobile GM965/GL960 Integrated Graphics Controller (rev 03) 00:1b.0 Audio device: Intel Corporation 82801H (ICH8 Family) HD Audio Controller (rev 03) 00:1c.0 PCI bridge: Intel Corporation 82801H (ICH8 Family) PCI Express Port 1 (rev 03) 00:1d.0 USB Controller: Intel Corporation 82801H (ICH8 Family) USB UHCI Controller #1 (rev 03) 00:1d.1 USB Controller: Intel Corporation 82801H (ICH8 Family) USB UHCI Controller #2 (rev 03) 00:1d.2 USB Controller: Intel Corporation 82801H (ICH8 Family) USB UHCI Controller #3 (rev 03) 00:1d.7 USB Controller: Intel Corporation 82801H (ICH8 Family) USB2 EHCI Controller #1 (rev 03) 00:1e.0 PCI bridge: Intel Corporation 82801 Mobile PCI Bridge (rev f3) 00:1f.0 ISA bridge: Intel Corporation 82801HEM (ICH8M) LPC Interface Controller (rev 03) 00:1f.1 IDE interface: Intel Corporation 82801HBM/HEM (ICH8M/ICH8M-E) IDE Controller (rev 03) 00:1f.2 SATA controller: Intel Corporation 82801HBM/HEM (ICH8M/ICH8M-E) SATA AHCI Controller (rev 03) 00:1f.3 SMBus: Intel Corporation 82801H (ICH8 Family) SMBus Controller (rev 03) 01:00.0 Ethernet controller: Atheros Communications Inc. AR242x 802.11abg Wireless PCI Express Adapter (rev 01) 02:01.0 Ethernet controller: Realtek Semiconductor Co., Ltd. RTL-8139/8139C/8139C+ (rev 10)
00:02.1 Display controller: Intel Corporation Mobile GM965/GL960 Integrated Graphics Controller (rev 03) Subsystem: Hewlett-Packard Company Presario C700 Control: I/O+ Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr- Stepping- SERR- FastB2B- DisINTx- Status: Cap+ 66MHz- UDF- FastB2B+ ParErr- DEVSEL=fast >TAbort- <TAbort- <MAbort- >SERR- <PERR- INTx- Latency: 0 Region 0: Memory at d1100000 (64-bit, non-prefetchable) [size=1M] Capabilities: [d0] Power Management version 3 Flags: PMEClk- DSI+ D1- D2- AuxCurrent=0mA PME(D0-,D1-,D2-,D3hot-,D3cold-) Status: D0 PME-Enable- DSel=0 DScale=0 PME- Bridge: PM- B3+
Manufacturer: Hewlett-Packard Product Name: Compaq Presario A900 Notebook PC Version: F.34
Let me know if you need more information. I can apply also patches to get additional information.
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