Re: screen goes blank when loading gma500_gfx (atom D2500)

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19.03.2015 14:56, One Thousand Gnomes wrote:
> On Thu, 19 Mar 2015 14:09:29 +0300
> Michael Tokarev <mjt@xxxxxxxxxx> wrote:
> 
>> Half a year passed since my first email in this thread, and current kernels
>> (4.0-tobe) still does not work properly.  Meanwhile, I found this thread:
>> http://www.linuxquestions.org/questions/slackware-installation-40/black-screen-on-intel-desktopboard-d2500cc-4175503983/
>> which seems to help.  I wonder where they got these boot params from...
> 
> Its one of the standard suggestions for dealing with wonky DRM I think.
> 
> If that makes the difference on your box can you send me a dmidecode of
> it, and I'll see if we can at least teach the driver that the 2500CC
> needs LVDS enabled regardless of what the BIOS reports.

I think you mean disable, not enable, since this is (again, I think) what
video=LVDS-1:d kernel boot parameter does.

Yes, with video=LVDS-1:d boot parameter, kernel boots fine and there is
graphics/video output on the screen, with the following message from kernel
when loading gma500_gfx:

[    6.472859] [drm] forcing LVDS-1 connector OFF

(and a few others).

There's one funky thing still -- the screen size is not calculated correctly
for the text (vga, d-sub) console, last text line is placed at about 3/4 of
the screen size, with the rest - 1/4 - of the screen being blank.

However, X seems to work fine, using generic modesetting driver.

Below is dmidecode output.

Thanks,

/mjt

===========================================================
# dmidecode 2.12
SMBIOS 2.7 present.
27 structures occupying 1491 bytes.
Table at 0x000EB920.

Handle 0x0000, DMI type 4, 42 bytes
Processor Information
	Socket Designation: CPU 1
	Type: Central Processor
	Family: Other
	Manufacturer: Intel(R) Corporation
	ID: 61 06 03 00 FF FB EB BF
	Version: Intel(R) Atom(TM) CPU D2500   @ 1.86GHz
	Voltage: 1.1 V
	External Clock: 133 MHz
	Max Speed: 4000 MHz
	Current Speed: 1868 MHz
	Status: Populated, Enabled
	Upgrade: None
	L1 Cache Handle: 0x0003
	L2 Cache Handle: 0x0001
	L3 Cache Handle: Not Provided
	Serial Number: Not Specified
	Asset Tag: Not Specified
	Part Number: Not Specified
	Core Count: 2
	Core Enabled: 2
	Thread Count: 1
	Characteristics:
		64-bit capable
		Multi-Core
		Execute Protection

Handle 0x0001, DMI type 7, 19 bytes
Cache Information
	Socket Designation: Unknown
	Configuration: Enabled, Not Socketed, Level 2
	Operational Mode: Write Back
	Location: Internal
	Installed Size: 512 kB
	Maximum Size: 512 kB
	Supported SRAM Types:
		Asynchronous
	Installed SRAM Type: Asynchronous
	Speed: Unknown
	Error Correction Type: Single-bit ECC
	System Type: Data
	Associativity: 8-way Set-associative

Handle 0x0002, DMI type 7, 19 bytes
Cache Information
	Socket Designation: Unknown
	Configuration: Enabled, Not Socketed, Level 1
	Operational Mode: Write Back
	Location: Internal
	Installed Size: 32 kB
	Maximum Size: 32 kB
	Supported SRAM Types:
		Asynchronous
	Installed SRAM Type: Asynchronous
	Speed: Unknown
	Error Correction Type: Single-bit ECC
	System Type: Instruction
	Associativity: 8-way Set-associative

Handle 0x0003, DMI type 7, 19 bytes
Cache Information
	Socket Designation: Unknown
	Configuration: Enabled, Not Socketed, Level 1
	Operational Mode: Write Back
	Location: Internal
	Installed Size: 24 kB
	Maximum Size: 24 kB
	Supported SRAM Types:
		Asynchronous
	Installed SRAM Type: Asynchronous
	Speed: Unknown
	Error Correction Type: Single-bit ECC
	System Type: Data
	Associativity: 32-way Set-associative

Handle 0x0004, DMI type 0, 24 bytes
BIOS Information
	Vendor: Intel Corp.
	Version: CCCDT10N.86A.0039.2013.0425.1625
	Release Date: 04/25/2013
	Address: 0xF0000
	Runtime Size: 64 kB
	ROM Size: 2048 kB
	Characteristics:
		PCI is supported
		BIOS is upgradeable
		BIOS shadowing is allowed
		Boot from CD is supported
		Selectable boot is supported
		EDD is supported
		8042 keyboard services are supported (int 9h)
		Serial services are supported (int 14h)
		Printer services are supported (int 17h)
		CGA/mono video services are supported (int 10h)
		ACPI is supported
		USB legacy is supported
		ATAPI Zip drive boot is supported
		BIOS boot specification is supported
		Function key-initiated network boot is supported
		Targeted content distribution is supported
		UEFI is supported
	BIOS Revision: 0.0
	Firmware Revision: 0.0

Handle 0x0005, DMI type 1, 27 bytes
System Information
	Manufacturer:
	Product Name:
	Version:
	Serial Number:
	UUID: 3C0B362E-E80B-E111-BB21-000EA68F75B9
	Wake-up Type: Power Switch
	SKU Number: Not Specified
	Family: Not Specified

Handle 0x0006, DMI type 2, 20 bytes
Base Board Information
	Manufacturer: Intel Corporation
	Product Name: D2500CC
	Version: AAG43156-301
	Serial Number: BQCC146000RT
	Asset Tag: Base Board Asset Tag
	Features:
		Board is a hosting board
		Board is replaceable
	Location In Chassis: Base Board Chassis Location
	Chassis Handle: 0x0007
	Type: Unknown
	Contained Object Handles: 0

Handle 0x0007, DMI type 3, 22 bytes
Chassis Information
	Manufacturer:
	Type: Desktop
	Lock: Not Present
	Version:
	Serial Number:
	Asset Tag:
	Boot-up State: Safe
	Power Supply State: Safe
	Thermal State: Other
	Security Status: Other
	OEM Information: 0x00000000
	Height: Unspecified
	Number Of Power Cords: Unspecified
	Contained Elements: 0
	SKU Number: Not Specified

Handle 0x0008, DMI type 8, 9 bytes
Port Connector Information
	Internal Reference Designator: PRIMARY
	Internal Connector Type: On Board IDE
	External Reference Designator: Not Specified
	External Connector Type: None
	Port Type: Other

Handle 0x0009, DMI type 8, 9 bytes
Port Connector Information
	Internal Reference Designator: SECONDARY
	Internal Connector Type: On Board IDE
	External Reference Designator: Not Specified
	External Connector Type: None
	Port Type: Other

Handle 0x000A, DMI type 8, 9 bytes
Port Connector Information
	Internal Reference Designator: ATX_PWR
	Internal Connector Type: Other
	External Reference Designator: Not Specified
	External Connector Type: None
	Port Type: Other

Handle 0x000B, DMI type 9, 17 bytes
System Slot Information
	Designation: PCIE X1 SLOT 1
	Type: x1 PCI Express
	Current Usage: Available
	Length: Short
	ID: 2
	Characteristics:
		3.3 V is provided
		PME signal is supported
		SMBus signal is supported
	Bus Address: 0000:00:00.0

Handle 0x000C, DMI type 9, 17 bytes
System Slot Information
	Designation: PCI SLOT 1
	Type: 32-bit PCI
	Current Usage: Available
	Length: Long
	ID: 1
	Characteristics:
		3.3 V is provided
		PME signal is supported
		SMBus signal is supported
	Bus Address: 0000:00:00.0

Handle 0x000D, DMI type 10, 6 bytes
On Board Device Information
	Type: Video
	Status: Enabled
	Description: Intel(R) GMA 3600 Video Device

Handle 0x000E, DMI type 10, 6 bytes
On Board Device Information
	Type: Ethernet
	Status: Enabled
	Description: Intel(R) 82574L Gigabit Ethernet Device

Handle 0x000F, DMI type 10, 6 bytes
On Board Device Information
	Type: Sound
	Status: Disabled
	Description: Intel(R) High Definition Audio Device

Handle 0x0010, DMI type 41, 11 bytes
Onboard Device
	Reference Designation: Intel(R) GMA 3600 Video Device
	Type: Video
	Status: Enabled
	Type Instance: 0
	Bus Address: 0000:00:02.0

Handle 0x0011, DMI type 41, 11 bytes
Onboard Device
	Reference Designation: Intel(R) 82574L Gigabit Ethernet Device
	Type: Ethernet
	Status: Enabled
	Type Instance: 0
	Bus Address: 0000:01:00.0

Handle 0x0012, DMI type 41, 11 bytes
Onboard Device
	Reference Designation: Intel(R) High Definition Audio Device
	Type: Sound
	Status: Disabled
	Type Instance: 0
	Bus Address: 0000:00:1b.0

Handle 0x0013, DMI type 13, 22 bytes
BIOS Language Information
	Language Description Format: Abbreviated
	Installable Languages: 1
		enUS
	Currently Installed Language: enUS

Handle 0x0014, DMI type 32, 20 bytes
System Boot Information
	Status: No errors detected

Handle 0x0015, DMI type 16, 23 bytes
Physical Memory Array
	Location: System Board Or Motherboard
	Use: System Memory
	Error Correction Type: None
	Maximum Capacity: 4 GB
	Error Information Handle: Not Provided
	Number Of Devices: 2

Handle 0x0016, DMI type 17, 34 bytes
Memory Device
	Array Handle: 0x0015
	Error Information Handle: Not Provided
	Total Width: Unknown
	Data Width: Unknown
	Size: No Module Installed
	Form Factor: DIMM
	Set: None
	Locator: SO DIMM 0
	Bank Locator: Channel A DIMM0
	Type: Unknown
	Type Detail: Synchronous
	Speed: Unknown
	Manufacturer: NO DIMM
	Serial Number: NO DIMM
	Asset Tag: NO DIMM
	Part Number: NO DIMM
	Rank: Unknown
	Configured Clock Speed: Unknown

Handle 0x0017, DMI type 17, 34 bytes
Memory Device
	Array Handle: 0x0015
	Error Information Handle: Not Provided
	Total Width: 64 bits
	Data Width: 64 bits
	Size: 1024 MB
	Form Factor: DIMM
	Set: None
	Locator: SO DIMM 1
	Bank Locator: Channel A DIMM1
	Type: DDR3
	Type Detail: Synchronous
	Speed: 1066 MHz
	Manufacturer: 0x0000000000000000
	Serial Number: 0x00000000
	Asset Tag: Unknown
	Part Number: 0x000000000000000000000000000000000000
	Rank: Unknown
	Configured Clock Speed: 1066 MHz

Handle 0x0018, DMI type 20, 35 bytes
Memory Device Mapped Address
	Starting Address: 0x00000000000
	Ending Address: 0x0003FFFFFFF
	Range Size: 1 GB
	Physical Device Handle: 0x0017
	Memory Array Mapped Address Handle: 0x0019
	Partition Row Position: 1

Handle 0x0019, DMI type 19, 31 bytes
Memory Array Mapped Address
	Starting Address: 0x00000000000
	Ending Address: 0x0003FFFFFFF
	Range Size: 1 GB
	Physical Array Handle: 0x0015
	Partition Width: 2

Handle 0xFEFF, DMI type 127, 4 bytes
End Of Table

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