Bug 10260 - i915 14x10 LVDS failure
Summary: i915 14x10 LVDS failure
Status: RESOLVED DUPLICATE of bug 9076
Alias: None
Product: xorg
Classification: Unclassified
Component: Driver/intel (show other bugs)
Version: 7.2 (2007.02)
Hardware: Other All
: medium normal
Assignee: Eric Anholt
QA Contact: Xorg Project Team
Depends on:
Blocks: 10102
  Show dependency treegraph
Reported: 2007-03-11 17:36 UTC by Stefan Dirsch
Modified: 2007-03-28 06:07 UTC (History)
3 users (show)

See Also:
i915 platform:
i915 features:

Xorg.0.log (71.76 KB, text/plain)
2007-03-11 17:39 UTC, Stefan Dirsch
no flags Details
new Xorg.0.log (47.90 KB, text/plain)
2007-03-14 05:15 UTC, Dirk Mueller
no flags Details
xorg.conf (5.08 KB, text/plain)
2007-03-14 05:17 UTC, Dirk Mueller
no flags Details
Xorg.0.log (48.13 KB, text/plain)
2007-03-16 02:22 UTC, Dirk Mueller
no flags Details

Description Stefan Dirsch 2007-03-11 17:36:15 UTC
The new "intel" driver doesn't seem to work. i810 (1.7.4) seems to work fine. It looks like the display (native resolution: 1400x1050) is not properly set up, instead each pixel looks like twice the size horizontally, while vertically full size is visibile.

XServer release:
"intel" driver release: 1.9.91
Comment 1 Stefan Dirsch 2007-03-11 17:36:50 UTC
10: PCI 02.0: 0300 VGA compatible controller (VGA)
  [Created at pci.288]
  UDI: /org/freedesktop/Hal/devices/pci_8086_2592
  Unique ID: _Znp.AA0FlerDir8
  SysFS ID: /devices/pci0000:00/0000:00:02.0
  SysFS BusID: 0000:00:02.0
  Hardware Class: graphics card
  Model: "Samsung Electronics 915 GM"
  Vendor: pci 0x8086 "Intel Corporation"
  Device: pci 0x2592 "915 GM"
  SubVendor: pci 0x144d "Samsung Electronics Co Ltd"
  SubDevice: pci 0xc01a
  Revision: 0x03
  Memory Range: 0xb0080000-0xb00fffff (rw,non-prefetchable)
  I/O Ports: 0x1800-0x1807 (rw)
  Memory Range: 0xc0000000-0xcfffffff (rw,prefetchable)
  Memory Range: 0xb0000000-0xb003ffff (rw,non-prefetchable)
  IRQ: 17 (19837 events)
  I/O Ports: 0x3c0-0x3df (rw)
  Module Alias: "pci:v00008086d00002592sv0000144Dsd0000C01Abc03sc00i00"
  Driver Info #0:
    XFree86 v4 Server Module: intel
  Driver Info #1:
    XFree86 v4 Server Module: intel
    3D Support: yes
    Extensions: dri
  Config Status: cfg=yes, avail=yes, need=yes, active=unknown
Comment 2 Stefan Dirsch 2007-03-11 17:37:13 UTC
11: PCI 02.1: 0380 Display controller
  [Created at pci.288]
  UDI: /org/freedesktop/Hal/devices/pci_8086_2792
  Unique ID: ruGf.SzVewQ5Dr7B
  SysFS ID: /devices/pci0000:00/0000:00:02.1
  SysFS BusID: 0000:00:02.1
  Hardware Class: graphics card
  Model: "Samsung Electronics Mobile 915GM/GMS/910GML Express Graphics
  Vendor: pci 0x8086 "Intel Corporation"
  Device: pci 0x2792 "Mobile 915GM/GMS/910GML Express Graphics Controller"
  SubVendor: pci 0x144d "Samsung Electronics Co Ltd"
  SubDevice: pci 0xc01a
  Revision: 0x03
  Memory Range: 0x56000000-0x5607ffff (rw,non-prefetchable,disabled)
  Module Alias: "pci:v00008086d00002792sv0000144Dsd0000C01Abc03sc80i00"
  Config Status: cfg=yes, avail=yes, need=yes, active=unknown
Comment 3 Stefan Dirsch 2007-03-11 17:37:36 UTC
31: None 00.0: 10002 LCD Monitor
  [Created at monitor.135]
  Unique ID: rdCR.08E28pF_MWE
  Hardware Class: monitor
  Model: "Samsung Electronics Notebook LCD"
  Vendor: "Samsung Electronics"
  Device: "Notebook LCD"
  Resolution: 1400x1050@60Hz
  Size: 305x230 mm
  Driver Info #0:
    Max. Resolution: 1400x1050
    Vert. Sync Range: 50-75 Hz
    Hor. Sync Range: 31-94 kHz
  Config Status: cfg=new, avail=yes, need=no, active=unknown
Comment 4 Stefan Dirsch 2007-03-11 17:39:10 UTC
Created attachment 9098 [details]
Comment 5 Stefan Dirsch 2007-03-11 17:40:44 UTC
This bugreport is also tracked in Novell Bugzilla

Comment 6 Eric Anholt 2007-03-13 16:23:43 UTC
New code in master may help with mysterious issues like this, so please try again.
Comment 7 Dirk Mueller 2007-03-14 05:15:08 UTC
no, unfortunately its becoming worse. I now have a totally black LVDS and when trying to switch to (text vga mode) console, I get wobbling and flickering text. looks like it drives the screen with a totally wrong frequency (not sure if thats possible, I think its connected digitally). 

Comment 8 Dirk Mueller 2007-03-14 05:15:52 UTC
Created attachment 9136 [details]
new Xorg.0.log
Comment 9 Dirk Mueller 2007-03-14 05:16:37 UTC
I don't have time to bisect the faulty commit (wouldn't know where to start anyway), but I can provide additional debug output etc if requested. 

Comment 10 Dirk Mueller 2007-03-14 05:17:40 UTC
Created attachment 9137 [details]
Comment 11 Eric Anholt 2007-03-14 10:17:50 UTC
Your new log appears to be truncated.  Did the server crash?
Comment 12 Dirk Mueller 2007-03-14 12:42:31 UTC
no, I think I captured it while the x server was running and didn't shut it down again beforehand (because console is corrupted after ending X). if you want the full log I can gather it
Comment 13 Dirk Mueller 2007-03-16 02:22:44 UTC
Created attachment 9178 [details]

This is the full log. forgot about it yesterday.
Comment 14 Eric Anholt 2007-03-20 13:49:23 UTC
OK, new code in master should hopefully fix issues like this one.  Please re-test.
Comment 15 Stefan Dirsch 2007-03-20 14:02:33 UTC
Thanks. Unfortunately building the intel driver is not easily possible, since some required bits (IIRC some cursor elements in crtc structure) in xserver sources are even missing the current server-1.3-branch (probably currently only in master). Maybe this could be fixed?
Comment 16 Dirk Mueller 2007-03-21 06:44:19 UTC
Stefan provided me with a package that had single patches backported, and it didn't have any effect. Same issue. 

Comment 17 Stefan Dirsch 2007-03-21 07:03:53 UTC
The following patches from git were appplied on top of 1.9.92:

* Move vendor ID check in the utils to after pci_device_probe.
* Make i830_sdvo_write_sdvox write everything twice.
* Add debug output for ADPA.
* Print the mode actually being set per pipe.
* Attempt to fix single/dual-channel issues on i9xx LVDS panels.

Comment 18 Stefan Dirsch 2007-03-23 19:28:50 UTC
Dirk, maybe you also need to set I9XX_P2_LVDS_SLOW_LIMIT to 90000. See Bug #9076.
Comment 19 Dirk Mueller 2007-03-28 06:07:26 UTC
seems like this fixed it

*** This bug has been marked as a duplicate of bug 9076 ***

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