Subj : Black screen on LVDS when starting X in RedHat 8.0
To   : alt.comp.linux,alt.linux,comp.os.linux,comp.os.linux.hardware
From : Dennis Peere
Date : Fri Jun 25 2004 05:28 pm

Dear All,
I have  a problem with X in RedHat 8.0 on several systems.
I use systems with Intel 845 chipset with onboard VGA and LVDS output.
There is an Samsung LTN104S2-L01 touchscreen connected to the LVDS output
and noting is attatched to the vga output.
I also have an extra CT69000 pic card installed as second display with a 10"
LCD.

I've put X & in the /home/myuser/.bashrc to startup X without any Window
manager. I just want to start my own graphical application as well from
within the .bashrc

It seems that in 10% of the reboots, I get a black screen on my LVDS monitor
although everytinh seems to work fine on the second display.
X is started and I can see everything when I use X0rfbserver to see what the
LVDS is showing.

The problem is that I have got several (30) exact systems like this and only
+/-5 of them seem to show this problem.
I've compared dmesg/lspci on systems that have the problem and others and
haven't found any "big" differences.
Below is some information of the systems that shows this problem most of
all.

this is an LSPCI of this machine:

00:00.0 Host bridge: Intel Corp. 82845G/GL [Brookdale-G] Chipset Host Bridge
(rev 03)
00:02.0 VGA compatible controller: Intel Corp. 82845G/GL [Brookdale-G]
Chipset Integrated Graphics Device (rev 03)
00:1d.0 USB Controller: Intel Corp. 82801DB USB (Hub #1) (rev 01)
00:1d.1 USB Controller: Intel Corp. 82801DB USB (Hub #2) (rev 01)
00:1d.2 USB Controller: Intel Corp. 82801DB USB (Hub #3) (rev 01)
00:1d.7 USB Controller: Intel Corp. 82801DB USB EHCI Controller (rev 01)
00:1e.0 PCI bridge: Intel Corp. 82801BA/CA/DB PCI Bridge (rev 81)
00:1f.0 ISA bridge: Intel Corp. 82801DB ISA Bridge (LPC) (rev 01)
00:1f.1 IDE interface: Intel Corp. 82801DB ICH4 IDE (rev 01)
00:1f.3 SMBus: Intel Corp. 82801DB SMBus (rev 01)
00:1f.5 Multimedia audio controller: Intel Corp. 82801DB AC'97 Audio (rev
01)
02:02.0 Ethernet controller: Intel Corp. 82559ER (rev 10)
02:03.0 Communication controller: NetMos Technology 222N-2 I/O Card (2S+1P)
(rev 01)
02:0a.0 VGA compatible controller: Chips and Technologies F69000 HiQVideo
(rev 64)

dmesg info :
Linux version 2.4.18-14 (bhcompile@stripples.devel.redhat.com) (gcc version
3.2 20020903 (Red Hat Linux 8.0 3.2-7)) #1 Wed Sep 4 13:35:50 EDT 2002
BIOS-provided physical RAM map:
 BIOS-e820: 0000000000000000 - 000000000009f800 (usable)
 BIOS-e820: 000000000009f800 - 00000000000a0000 (reserved)
 BIOS-e820: 00000000000d8000 - 00000000000e0000 (reserved)
 BIOS-e820: 00000000000e4000 - 0000000000100000 (reserved)
 BIOS-e820: 0000000000100000 - 000000000f760000 (usable)
 BIOS-e820: 000000000f760000 - 000000000f770000 (ACPI data)
 BIOS-e820: 000000000f770000 - 000000000f780000 (ACPI NVS)
 BIOS-e820: 000000000f780000 - 0000000010000000 (reserved)
 BIOS-e820: 00000000fec00000 - 00000000fec10000 (reserved)
 BIOS-e820: 00000000fee00000 - 00000000fee01000 (reserved)
 BIOS-e820: 00000000ff800000 - 00000000ffc00000 (reserved)
 BIOS-e820: 00000000fffffc00 - 0000000100000000 (reserved)
0MB HIGHMEM available.
247MB LOWMEM available.
On node 0 totalpages: 63328
zone(0): 4096 pages.
zone(1): 59232 pages.
zone(2): 0 pages.
Kernel command line: auto BOOT_IMAGE=linux ro
BOOT_FILE=/boot/vmlinuz-2.4.18-14 root=LABEL=/
Initializing CPU#0
Detected 1999.961 MHz processor.
Speakup v-1.00 CVS: Tue Jun 11 14:22:53 EDT 2002 : initialized
Console: colour VGA+ 80x25
Calibrating delay loop... 3970.35 BogoMIPS
Memory: 244416k/253312k available (1326k kernel code, 6532k reserved, 999k
data, 212k init, 0k highmem)
Dentry cache hash table entries: 32768 (order: 6, 262144 bytes)
Inode cache hash table entries: 16384 (order: 5, 131072 bytes)
Mount cache hash table entries: 4096 (order: 3, 32768 bytes)
ramfs: mounted with options: <defaults>
ramfs: max_pages=30799 max_file_pages=0 max_inodes=0 max_dentries=30799
Buffer cache hash table entries: 16384 (order: 4, 65536 bytes)
Page-cache hash table entries: 65536 (order: 6, 262144 bytes)
CPU: Before vendor init, caps: bfebfbff 00000000 00000000, vendor = 0
CPU: L1 I cache: 0K, L1 D cache: 8K
CPU: After vendor init, caps: bfebfbff 00000000 00000000 00000000
Intel machine check architecture supported.
Intel machine check reporting enabled on CPU#0.
CPU:     After generic, caps: bfebfbff 00000000 00000000 00000000
CPU:             Common caps: bfebfbff 00000000 00000000 00000000
CPU: Intel(R) Celeron(R) CPU 2.00GHz stepping 07
Enabling fast FPU save and restore... done.
Enabling unmasked SIMD FPU exception support... done.
Checking 'hlt' instruction... OK.
POSIX conformance testing by UNIFIX
mtrr: v1.40 (20010327) Richard Gooch (rgooch@atnf.csiro.au)
mtrr: detected mtrr type: Intel
PCI: PCI BIOS revision 2.10 entry at 0xfd81e, last bus=2
PCI: Using configuration type 1
PCI: Probing PCI hardware
Unknown bridge resource 2: assuming transparent
isapnp: Scanning for PnP cards...
isapnp: No Plug & Play device found
speakup:  initialized device: /dev/synth, node (MAJOR 10, MINOR 25)
Linux NET4.0 for Linux 2.4
Based upon Swansea University Computer Society NET3.039
Initializing RT netlink socket
apm: BIOS version 1.2 Flags 0x03 (Driver version 1.16)
Starting kswapd
VFS: Diskquotas version dquot_6.5.0 initialized
Detected PS/2 Mouse Port.
pty: 2048 Unix98 ptys configured
Serial driver version 5.05c (2001-07-08) with MANY_PORTS MULTIPORT SHARE_IRQ
SERIAL_PCI ISAPNP enabled
ttyS0 at 0x03f8 (irq = 4) is a 16550A
ttyS1 at 0x02f8 (irq = 3) is a 16550A
ttyS2 at 0x03e8 (irq = 4) is a 16550A
ttyS3 at 0x02e8 (irq = 3) is a 16550A
Real Time Clock Driver v1.10e
oprofile: can't get RTC I/O Ports
block: 464 slots per queue, batch=116
Uniform Multi-Platform E-IDE driver Revision: 6.31
ide: Assuming 33MHz system bus speed for PIO modes; override with idebus=xx
PIIX4: IDE controller on PCI bus 00 dev f9
PCI: Enabling device 00:1f.1 (0005 -> 0007)
PCI: No IRQ known for interrupt pin A of device 00:1f.1. Please try using
pci=biosirq.
PIIX4: chipset revision 1
PIIX4: not 100% native mode: will probe irqs later
    ide0: BM-DMA at 0x18c0-0x18c7, BIOS settings: hda:DMA, hdb:pio
    ide1: BM-DMA at 0x18c8-0x18cf, BIOS settings: hdc:pio, hdd:pio
hda: WDC WD400JB-32ENA0, ATA DISK drive
ide2: ports already in use, skipping probe
ide0 at 0x1f0-0x1f7,0x3f6 on irq 14
blk: queue c03c0004, I/O limit 4095Mb (mask 0xffffffff)
blk: queue c03c0004, I/O limit 4095Mb (mask 0xffffffff)
hda: 78165360 sectors (40021 MB) w/8192KiB Cache, CHS=4865/255/63, UDMA(100)
ide-floppy driver 0.99.newide
Partition check:
 hda: hda1 hda2 hda3 hda4 < hda5 hda6 hda7 hda8 hda9 >
floppy0: no floppy controllers found
NET4: Frame Diverter 0.46
RAMDISK driver initialized: 16 RAM disks of 4096K size 1024 blocksize
ide-floppy driver 0.99.newide
md: md driver 0.90.0 MAX_MD_DEVS=256, MD_SB_DISKS=27
md: Autodetecting RAID arrays.
md: autorun ...
md: ... autorun DONE.
NET4: Linux TCP/IP 1.0 for NET4.0
IP Protocols: ICMP, UDP, TCP, IGMP
IP: routing cache hash table of 2048 buckets, 16Kbytes
TCP: Hash tables configured (established 16384 bind 32768)
Linux IP multicast router 0.06 plus PIM-SM
NET4: Unix domain sockets 1.0/SMP for Linux NET4.0.
RAMDISK: Compressed image found at block 0
Freeing initrd memory: 128k freed
VFS: Mounted root (ext2 filesystem).
Journalled Block Device driver loaded
kjournald starting.  Commit interval 5 seconds
EXT3-fs: mounted filesystem with ordered data mode.
Freeing unused kernel memory: 212k freed
usb.c: registered new driver usbdevfs
usb.c: registered new driver hub
PCI: Setting latency timer of device 00:1d.7 to 64
hcd.c: ehci-hcd @ 00:1d.7, Intel Corp. 82801DB USB EHCI Controller
hcd.c: irq 12, pci mem d0048000
usb.c: new USB bus registered, assigned bus number 1
ehci-hcd.c: restricting 64bit DMA mappings to segment 0 ...
ehci-hcd.c: USB 2.0 support enabled, EHCI rev 1. 0
hub.c: USB hub found
hub.c: 6 ports detected
usb-uhci.c: $Revision: 1.275 $ time 13:44:31 Sep  4 2002
usb-uhci.c: High bandwidth mode enabled
PCI: Setting latency timer of device 00:1d.0 to 64
usb-uhci.c: USB UHCI at I/O 0x1840, IRQ 11
usb-uhci.c: Detected 2 ports
usb.c: new USB bus registered, assigned bus number 2
hub.c: USB hub found
hub.c: 2 ports detected
PCI: Setting latency timer of device 00:1d.1 to 64
usb-uhci.c: USB UHCI at I/O 0x1860, IRQ 11
usb-uhci.c: Detected 2 ports
usb.c: new USB bus registered, assigned bus number 3
hub.c: USB hub found
hub.c: 2 ports detected
PCI: Setting latency timer of device 00:1d.2 to 64
usb-uhci.c: USB UHCI at I/O 0x1880, IRQ 11
usb-uhci.c: Detected 2 ports
usb.c: new USB bus registered, assigned bus number 4
hub.c: USB hub found
hub.c: 2 ports detected
usb-uhci.c: v1.275:USB Universal Host Controller Interface driver
usb.c: registered new driver hiddev
usb.c: registered new driver hid
hid-core.c: v1.8.1 Andreas Gal, Vojtech Pavlik <vojtech@suse.cz>
hid-core.c: USB HID support drivers
mice: PS/2 mouse device common for all mice
EXT3 FS 2.4-0.9.18, 14 May 2002 on ide0(3,2), internal journal
Adding Swap: 265032k swap-space (priority -1)
usb.c: registered new driver usbtm
kjournald starting.  Commit interval 5 seconds
EXT3 FS 2.4-0.9.18, 14 May 2002 on ide0(3,5), internal journal
EXT3-fs: mounted filesystem with ordered data mode.
kjournald starting.  Commit interval 5 seconds
EXT3 FS 2.4-0.9.18, 14 May 2002 on ide0(3,7), internal journal
EXT3-fs: mounted filesystem with ordered data mode.
kjournald starting.  Commit interval 5 seconds
EXT3 FS 2.4-0.9.18, 14 May 2002 on ide0(3,8), internal journal
EXT3-fs: mounted filesystem with ordered data mode.
kjournald starting.  Commit interval 5 seconds
EXT3 FS 2.4-0.9.18, 14 May 2002 on ide0(3,3), internal journal
EXT3-fs: mounted filesystem with ordered data mode.
kjournald starting.  Commit interval 5 seconds
EXT3 FS 2.4-0.9.18, 14 May 2002 on ide0(3,6), internal journal
EXT3-fs: mounted filesystem with ordered data mode.
ip_tables: (C) 2000-2002 Netfilter core team
eepro100.c:v1.09j-t 9/29/99 Donald Becker
http://www.scyld.com/network/eepro100.html
eepro100.c: $Revision: 1.36 $ 2000/11/17 Modified by Andrey V. Savochkin
<saw@saw.sw.com.sg> and others
divert: allocating divert_blk for eth0
eth0: OEM i82557/i82558 10/100 Ethernet, 00:00:60:DA:42:2F, IRQ 12.
  Board assembly ffffff-255, Physical connectors present: RJ45
  Primary interface chip i82555 PHY #1.
    Secondary interface chip i82555.
  General self-test: passed.
  Serial sub-system self-test: passed.
  Internal registers self-test: passed.
  ROM checksum self-test: passed (0xd0a6c714).
Linux agpgart interface v0.99 (c) Jeff Hartmann
agpgart: Maximum main memory to use for agp memory: 196M
agpgart: Detected an Intel 845G Chipset.
agpgart: detected 8060K stolen memory.
agpgart: AGP aperture is 128M @ 0xd8000000
memory : c97a7260


XF86Config :
# XFree86 4 configuration created by pyxf86config

Section "ServerLayout"
 Identifier     "Default Layout"
 Screen         "Screen0" 0 0
 Screen         "Screen1" LeftOf "Screen0"
 InputDevice    "Keyboard0" "CoreKeyboard"
 InputDevice    "touchscreen1" "CorePointer"
EndSection

Section "Files"
 RgbPath      "/usr/X11R6/lib/X11/rgb"
 FontPath     "unix/:7100"
EndSection

Section "Module"
 Load  "dbe"
 Load  "extmod"
 Load  "fbdevhw"
 Load  "dri"
 Load  "glx"
 Load  "record"
 Load  "freetype"
 Load  "type1"
EndSection

Section "InputDevice"
 Identifier  "Keyboard0"
 Driver      "keyboard"
 Option     "XkbRules" "xfree86"
 Option     "XkbModel" "pc105"
 Option     "XkbLayout" "be"
EndSection

Section "InputDevice"
 Identifier  "Mouse0"
 Driver      "mouse"
 Option     "Protocol" "PS/2"
 Option     "Device" "/dev/psaux"
 Option     "ZAxisMapping" "4 5"
 Option     "Emulate3Buttons" "no"
EndSection

Section "InputDevice"
 Identifier  "DevInputMice"
 Driver      "mouse"
 Option     "Protocol" "IMPS/2"
 Option     "Device" "/dev/input/mice"
 Option     "ZAxisMapping" "4 5"
 Option     "Emulate3Buttons" "no"
EndSection

Section "InputDevice"
 Identifier  "touchscreen1"
 Driver      "elographics"
 Option     "Device" "/dev/ttyS5"
 Option     "AlwaysCore"
 Option     "screenno" "0"
 Option     "MinX" "328"
 Option     "MaxX" "3683"
 Option     "MinY" "515"
 Option     "MaxY" "3543"
 Option     "UntouchDelay" "3"
 Option     "ReportDelay" "1"
EndSection

Section "Monitor"
 Identifier   "Monitor0"
 VendorName   "Monitor Vendor"
 ModelName    "Monitor Model"
 HorizSync    31.5 - 48.5
 VertRefresh  50.0 - 70.0
 Option     "dpms"
EndSection

Section "Monitor"
 Identifier   "Monitor1"
 VendorName   "Monitor Vendor"
 ModelName    "Unknown monitor"
 HorizSync    31.5 - 37.9
 VertRefresh  50.0 - 70.0
 ModeLine     "1400x1050" 129.0 1400 1464 1656 1960 1050 1051 1054 1100
+hsync +vsync
 ModeLine     "1400x1050" 151.0 1400 1464 1656 1960 1050 1051 1054 1100
+hsync +vsync
 ModeLine     "1400x1050" 162.0 1400 1464 1656 1960 1050 1051 1054 1100
+hsync +vsync
 ModeLine     "1400x1050" 184.0 1400 1464 1656 1960 1050 1051 1054 1100
+hsync +vsync
 Option     "dpms"
EndSection

Section "Device"
 Identifier  "Videocard0"
 Driver      "i810"
 VendorName  "Videocard vendor"
 BoardName   "Intel 845"
 BusID       "PCI:0:2:0"
EndSection

Section "Device"
 Identifier  "Videocard1"
 Driver      "chips"
 VendorName  "Videocard vendor"
 BoardName   "Chips & Technologies CT69000"
 Option     "XaaNoPixmapCache" ""
 Option     "XaaNoScreenToScreenCopy" ""
 Option     "XaaNoCPUToScreenColorExpandFill" ""
 BusID       "PCI:2:10:0"
EndSection

Section "Screen"
 Identifier "Screen0"
 Device     "Videocard0"
 Monitor    "Monitor0"
 DefaultDepth     16
 SubSection "Display"
  Depth     24
  Modes    "800x600"
 EndSubSection
 SubSection "Display"
  Depth     16
  Modes    "800x600" "640x480"
 EndSubSection
EndSection

Section "Screen"
 Identifier "Screen1"
 Device     "Videocard1"
 Monitor    "Monitor1"
 DefaultDepth     16
 SubSection "Display"
  Depth     16
  Modes    "800x600" "640x480"
 EndSubSection
EndSection

Section "DRI"
 Group        0
 Mode         0666
EndSection

.