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Sortie HDMI1 sur laptop

Bonjour,

j'ai un petit soucis.. la sortie HDMI de mon laptop n'est pas fonctionnel..
petit récap :

J'ai le driver proprio installer (fglrx), mon pc (Lenovo Thinkpad Edge E520) possède 2 carte graphique switchable.

lspci -vnn | egrep "VGA|3D|Display"

00:02.0 VGA compatible controller [0300]: Intel Corporation 2nd Generation Core Processor Family Integrated Graphics Controller [8086:0116] (rev 09) (prog-if 00 [VGA controller])
01:00.0 VGA compatible controller [0300]: Advanced Micro Devices [AMD] nee ATI Whistler [AMD Radeon HD 6600M Series] [1002:6741] (prog-if 00 [VGA controller])

glxinfo | grep OpenGL

OpenGL vendor string: Advanced Micro Devices, Inc.
OpenGL renderer string: AMD Radeon 6600M and 6700M Series
OpenGL version string: 4.2.11762 Compatibility Profile Context
OpenGL shading language version string: 4.20
OpenGL extensions:

fglrxinfo

display: :0  screen: 0
OpenGL vendor string: Advanced Micro Devices, Inc.
OpenGL renderer string: AMD Radeon 6600M and 6700M Series
OpenGL version string: 4.2.11762 Compatibility Profile Context

grep HDMI /var/log/Xorg.0.log

[    27.559] (II) fglrx(0): Output HDMI1 has no monitor section
[    27.611] (II) fglrx(0): EDID for output HDMI1
[    27.660] (II) fglrx(0): Output HDMI1 disconnected
[    32.248] (II) config/udev: Adding input device HDA Intel PCH HDMI/DP,pcm=3 (/dev/input/event10)

sudo get-edid | parse-edid

parse-edid: parse-edid version 2.0.0
get-edid: get-edid version 2.0.0

	Performing real mode VBE call
	Interrupt 0x10 ax=0x4f00 bx=0x0 cx=0x0
	Function supported
	Call successful

	VBE version 300
	VBE string at 0x11100 "Intel(R)Sandybridge Mobile Graphics Chipset Accelerated VGA BIOS"

VBE/DDC service about to be called
	Report DDC capabilities

	Performing real mode VBE call
	Interrupt 0x10 ax=0x4f15 bx=0x0 cx=0x0
	Function supported
	Call successful

	Monitor and video card combination does not support DDC1 transfers
	Monitor and video card combination supports DDC2 transfers
	0 seconds per 128 byte EDID block transfer
	Screen is not blanked during DDC transfer

Reading next EDID block

VBE/DDC service about to be called
	Read EDID

	Performing real mode VBE call
	Interrupt 0x10 ax=0x4f15 bx=0x1 cx=0x0
	Function supported
	Call successful

parse-edid: EDID checksum passed.

	# EDID version 1 revision 3
Section "Monitor"
	# Block type: 2:0 3:f
	# Block type: 2:0 3:fe
	# Block type: 2:0 3:fe
	Identifier "SEC:5230"
	VendorName "SEC"
	ModelName "SEC:5230"
	# Block type: 2:0 3:f
	# Block type: 2:0 3:fe
	# Block type: 2:0 3:fe
	# DPMS capabilities: Active off:yes  Suspend:yes  Standby:yes

	Mode 	"1366x768"	# vfreq 59.998Hz, hfreq 47.398kHz
		DotClock	72.330000
		HTimings	1366 1414 1446 1526
		VTimings	768 770 775 790
		Flags	"-HSync" "-VSync"
	EndMode
	# Block type: 2:0 3:f
	# Block type: 2:0 3:fe
	# Block type: 2:0 3:fe
EndSection

dmesg

[   10.349627] HDMI status: Codec=3 Pin=5 Presence_Detect=0 ELD_Valid=0
[   10.349952] input: HDA Intel PCH HDMI/DP,pcm=3 as /devices/pci0000:00/0000:00:1b.0/sound/card0/input10

Aucun evenement lorsque je branche/débranche le cable hdmi (TV allumé) sur la sortie hdmi du pc :

sudo udevadm monitor

monitor will print the received events for:
UDEV - the event which udev sends out after rule processing
KERNEL - the kernel uevent

xrandr

Screen 0: minimum 320 x 200, current 1366 x 768, maximum 8192 x 8192
LVDS1 connected 1366x768+0+0 (normal left inverted right x axis y axis) 344mm x 194mm
   1366x768       60.0*+
   1360x768       59.8     60.0  
   1024x768       60.0  
   800x600        60.3     56.2  
   640x480        59.9  
VGA1 disconnected (normal left inverted right x axis y axis)
HDMI1 disconnected (normal left inverted right x axis y axis)
DP1 disconnected (normal left inverted right x axis y axis)

cat /etc/X11/xorg.conf

Section "ServerLayout"
	Identifier     "aticonfig Layout"
	Screen      0  "aticonfig-Screen[0]-0" 0 0
EndSection

Section "Module"
EndSection

Section "Monitor"
	Identifier   "aticonfig-Monitor[0]-0"
	Option	    "VendorName" "ATI Proprietary Driver"
	Option	    "ModelName" "Generic Autodetecting Monitor"
	Option	    "DPMS" "true"
EndSection

Section "Device"
	Identifier  "aticonfig-Device[0]-0"
	Driver      "fglrx"
	BusID       "PCI:1:0:0"
EndSection

Section "Screen"
	Identifier "aticonfig-Screen[0]-0"
	Device     "aticonfig-Device[0]-0"
	Monitor    "aticonfig-Monitor[0]-0"
	DefaultDepth     24
	SubSection "Display"
		Viewport   0 0
		Depth     24
	EndSubSection
EndSection

La sortie VGA1 fonctionne correctement.

petit truc bizarre, lorsque que ma TV et branché sur la sortie HDMI du pc et qu'elle s’étend parce qu'il n'y a aucun signal, la souris de mon pc est trrrrrèèèès lente..
il me suffit de débranché le cable hdmi pour qu'elle revienne à la normal...

Merci pour tout aide apporté