Bug 18124 - [945GM DVI-I] Screen reports "no input signal" when starting X
Summary: [945GM DVI-I] Screen reports "no input signal" when starting X
Status: RESOLVED FIXED
Alias: None
Product: xorg
Classification: Unclassified
Component: Driver/intel (show other bugs)
Version: 7.4 (2008.09)
Hardware: x86 (IA32) Linux (All)
: medium normal
Assignee: Wang Zhenyu
QA Contact: Xorg Project Team
URL:
Whiteboard:
Keywords: NEEDINFO
Depends on:
Blocks:
 
Reported: 2008-10-19 14:48 UTC by Michael Melcher
Modified: 2009-02-15 21:19 UTC (History)
0 users

See Also:
i915 platform:
i915 features:


Attachments
Xorg.1.log with debug informations (51.91 KB, text/plain)
2008-10-19 14:48 UTC, Michael Melcher
no flags Details
LVDS quirk patch (741 bytes, patch)
2008-11-26 19:54 UTC, Wang Zhenyu
no flags Details | Splinter Review
use EDID info for SDVO detect (1.93 KB, patch)
2008-12-03 21:45 UTC, Wang Zhenyu
no flags Details | Splinter Review
Check EDID info for DVI-I (1.71 KB, patch)
2009-02-08 18:48 UTC, Wang Zhenyu
no flags Details | Splinter Review

Description Michael Melcher 2008-10-19 14:48:03 UTC
Created attachment 19750 [details]
Xorg.1.log with debug informations

I have a Maxdata Favorite 100xs
When I start X the monitor says "no input signal" and then goes into standby mode
The screen is a 22" TFT from BLUE H connected with a vga cable and an adapter to the DVI port of the box


here's the output of lspci and lspci -vvv:

lspci
---------------------
00:00.0 Host bridge: Intel Corporation Mobile 945GM/PM/GMS, 943/940GML and 945GT Express Memory Controller Hub (rev 03)
00:02.0 VGA compatible controller: Intel Corporation Mobile 945GM/GMS, 943/940GML Express Integrated Graphics Controller (rev 03)
00:02.1 Display controller: Intel Corporation Mobile 945GM/GMS/GME, 943/940GML Express Integrated Graphics Controller (rev 03)
00:1b.0 Audio device: Intel Corporation 82801G (ICH7 Family) High Definition Audio Controller (rev 02)
00:1c.0 PCI bridge: Intel Corporation 82801G (ICH7 Family) PCI Express Port 1 (rev 02)
00:1c.2 PCI bridge: Intel Corporation 82801G (ICH7 Family) PCI Express Port 3 (rev 02)
00:1d.0 USB Controller: Intel Corporation 82801G (ICH7 Family) USB UHCI Controller #1 (rev 02)
00:1d.1 USB Controller: Intel Corporation 82801G (ICH7 Family) USB UHCI Controller #2 (rev 02)
00:1d.2 USB Controller: Intel Corporation 82801G (ICH7 Family) USB UHCI Controller #3 (rev 02)
00:1d.3 USB Controller: Intel Corporation 82801G (ICH7 Family) USB UHCI Controller #4 (rev 02)
00:1d.7 USB Controller: Intel Corporation 82801G (ICH7 Family) USB2 EHCI Controller (rev 02)
00:1e.0 PCI bridge: Intel Corporation 82801 Mobile PCI Bridge (rev e2)
00:1f.0 ISA bridge: Intel Corporation 82801GHM (ICH7-M DH) LPC Interface Bridge (rev 02)
00:1f.1 IDE interface: Intel Corporation 82801G (ICH7 Family) IDE Controller (rev 02)
00:1f.2 SATA controller: Intel Corporation 82801GBM/GHM (ICH7 Family) SATA AHCI Controller (rev 02)
00:1f.3 SMBus: Intel Corporation 82801G (ICH7 Family) SMBus Controller (rev 02)
02:00.0 Ethernet controller: Intel Corporation 82573E Gigabit Ethernet Controller (Copper)
03:00.0 Ethernet controller: Atheros Communications Inc. AR242x 802.11abg Wireless PCI Express Adapter (rev 01)
04:0b.0 FireWire (IEEE 1394): Ricoh Co Ltd R5C832 IEEE 1394 Controller (rev 05)
04:0b.1 SD Host controller: Ricoh Co Ltd R5C822 SD/SDIO/MMC/MS/MSPro Host Adapter (rev 22)
04:0b.2 System peripheral: Ricoh Co Ltd R5C843 MMC Host Controller (rev 12)
04:0b.3 System peripheral: Ricoh Co Ltd R5C592 Memory Stick Bus Host Adapter (rev 12)

---------------------
lspci -vvv (truncated, only for Display Controller)
---------------------

00:02.0 VGA compatible controller: Intel Corporation Mobile 945GM/GMS, 943/940GML Express Integrated Graphics Controller (rev 03) (prog-if 00 [VGA controller])
        Subsystem: FIRST INTERNATIONAL Computer Inc Device 4530
        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
        Interrupt: pin A routed to IRQ 10
        Region 0: Memory at d0300000 (32-bit, non-prefetchable) [size=512K]
        Region 1: I/O ports at 1800 [size=8]
        Region 2: Memory at c0000000 (32-bit, prefetchable) [size=256M]
  
        Capabilities: [90] Message Signalled Interrupts: Mask- 64bit- Count=1/1 Enable-
                Address: 00000000  Data: 0000
        Capabilities: [d0] Power Management version 2
                Flags: PMEClk- DSI+ D1- D2- AuxCurrent=0mA PME(D0-,D1-,D2-,D3hot-,D3cold-)
                Status: D0 PME-Enable- DSel=0 DScale=0 PME-
        Kernel driver in use: intelfb
                                
00:02.1 Display controller: Intel Corporation Mobile 945GM/GMS/GME, 943/940GML Express Integrated Graphics Controller (rev 03)
        Subsystem: FIRST INTERNATIONAL Computer Inc Device 4530
        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 d0380000 (32-bit, non-prefetchable) [size=512K]
        Capabilities: [d0] Power Management version 2
                Flags: PMEClk- DSI+ D1- D2- AuxCurrent=0mA PME(D0-,D1-,D2-,D3hot-,D3cold-)
                Status: D0 PME-Enable- DSel=0 DScale=0 PME-
                                                                                                                

---------------------

Driver Version:
*  x11-drivers/xf86-video-i810
      Latest version available: 2.4.2-r2
      Latest version installed: 2.4.2-r2

---------------------

Xorg:
*  x11-base/xorg-x11
      Latest version available: 7.4
      Latest version installed: 7.4

*  x11-base/xorg-server
      Latest version available: 1.5.2
      Latest version installed: 1.5.2
                                    
---------------------

System:
Gentoo Base System release 2.0.0
# uname -srvmpio
Linux 2.6.27-gentoo #6 PREEMPT Sat Oct 18 17:47:00 CEST 2008 i686 Intel(R) Celeron(R) M CPU 440 @ 1.86GHz GenuineIntel GNU/Linux


---------------------


Attached files:
Xorg.1.log
Comment 1 Keith Packard 2008-10-19 15:14:20 UTC
Looks like this box needs a quirk to disable LVDS, and then we need a better way to figure out that the DVI connector carries both TMDS and VGA signals.

Please send the lspci -nv output so we can stick the numeric device IDs into the driver and disable the LVDS output (we cannot detect that it is disconnected in hardware)
Comment 2 Gordon Jin 2008-10-19 18:20:43 UTC
I think both the LVDS detection issue (the driver wrongly assumed your machine has a local flat panel since it's mobile chipset 945gm) and the DVI-I issue (detected both DVI and VGA output but actually there's only one) have been fixed in 2.5 driver release. 
Could you try http://xorg.freedesktop.org/archive/individual/driver/xf86-video-intel-2.4.98.0.tar.gz or the upcoming 2.5 release?

Comment 3 Wang Zhenyu 2008-11-26 19:54:55 UTC
Created attachment 20620 [details] [review]
LVDS quirk patch

With this patch your VGA should work then.
Comment 4 Wang Zhenyu 2008-12-03 21:45:09 UTC
Created attachment 20804 [details] [review]
use EDID info for SDVO detect

This one trys to do same as integrated DVI for SDVO DVI, to check EDID type bit for output detect.
Comment 5 Wang Zhenyu 2008-12-08 21:58:57 UTC
Comment on attachment 20620 [details] [review]
LVDS quirk patch

I've pushed LVDS detect patch to git master, so it should obselete quirk patch. Please help to test it.
Comment 6 Wang Zhenyu 2008-12-16 18:46:10 UTC
ping? The test needs recent git master or 2.6 rc1 with sdvo detect here I attached here.
Comment 7 Wang Zhenyu 2009-01-08 18:34:26 UTC
ping again?
Comment 8 Wang Zhenyu 2009-02-08 18:48:31 UTC
Created attachment 22698 [details] [review]
Check EDID info for DVI-I

Updated patch.
Comment 9 Wang Zhenyu 2009-02-15 21:19:53 UTC
Patch is pushed. Close this one.

commit 37c67088a887e6380571e6eec8a8f058e3e24717
Author: Zhenyu Wang <zhenyu.z.wang@intel.com>
Date:   Wed Feb 11 15:15:27 2009 +0800

    SDVO: check EDID info for DVI-I
    
    For SDVO DVI-I, check EDID info for digital output,
    otherwise mark it to be disconnected as analog output
    is driven by VGA then.


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