| lists.openwall.net | lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC | |
|
Open Source and information security mailing list archives
| ||
|
Message-Id: <201208022003.28404.linux@rainbow-software.org> Date: Thu, 2 Aug 2012 20:03:27 +0200 From: Ondrej Zary <linux@...nbow-software.org> To: Florian Tobias Schandinat <FlorianSchandinat@....de> Cc: linux-fbdev@...r.kernel.org, Kernel development list <linux-kernel@...r.kernel.org> Subject: viafb on Clevo M5x0V laptop (+VT1631L) Hello, I've got a Clevo M5x0V laptop which has VIA PM800 chipset (1106:3118) and 1280x768 LCD panel connected using VT1631L LVDS transmitter. There's a schematic of this laptop available on the web which shows that VT1631L's I2C port is not connected anywhere... viafb does not work properly - LCD panel (and backlight) is turned off upon module load and there's 640x480 signal on VGA connector (even when monitor was not connected during module load). Looking at the code, there's almost nothing for VT1631. What needs to be done in order for the LCD to work? Xorg seems to work using openchrome (but it is not able to restore the card on resume from S3): (II) CHROME(0): Unable to get panel size from EDID. Return code: 0 (II) CHROME(0): ViaPanelGetNativeModeFromScratchPad (II) CHROME(0): Native Panel Resolution is 1280x768 This is from kernel 3.5 with VIAFB_DEBUG and VIAFB_WARN enabled: [ 153.051061] VIA Graphics Integration Chipset framebuffer 2.4 initializing [ 153.051765] viafb 0000:01:00.0: power state changed by ACPI to D0 [ 153.051773] viafb 0000:01:00.0: power state changed by ACPI to D0 [ 153.053535] Device ID = 3259 [ 153.053553] FB Size = 4000 [ 153.059984] VIAFB PCI Probe!! [ 153.060044] viafb: Probing I2C bus 0x26 [ 153.092761] viafb: Probing I2C bus 0x31 [ 155.588019] viafb: Probing I2C bus 0x2C [ 155.619016] viafb: Finished I2C bus probing [ 155.619021] parse_lcd_port: viafb_lcd_port:,interface:0 [ 155.619023] parse_dvi_port: viafb_dvi_port:,interface:0 [ 155.713224] TMDS Chip = 0 [ 155.713227] viafb_init_dvi_size() [ 155.713229] viafb_dvi_sense!! [ 155.714415] viafb_dvi_query_EDID!! [ 155.716820] viafb_dvi_query_EDID!! [ 155.719179] viafb_lvds_identify_vt1636. [ 155.812018] viafb_lvds_identify_vt1636. [ 155.814383] viafb_init_lcd_size() [ 155.814384] fp_get_panel_id() [ 155.814387] LVDS Chip = 0 [ 155.814389] LVDS1 output_interface = 6 [ 155.814391] LVDS2 output_interface = 6 [ 155.814405] viafb_check_var! [ 155.815250] fbcon: Via (fb0) is primary device [ 155.815257] viafb_open! [ 155.818608] viafb_set_par! [ 155.818720] via_set_primary_pitch(0x00000A00) [ 155.818723] via_set_secondary_pitch(0x00000A00) [ 155.818727] via_set_primary_color_depth(24) [ 155.818730] via_set_secondary_color_depth(24) [ 155.818788] viafb_pan_display, address = 0 [ 155.818789] via_set_primary_address(0x00000000) [ 155.818793] via_set_secondary_address(0x00000000) [ 155.819020] viafb_pan_display, address = 0 [ 155.819021] via_set_primary_address(0x00000000) [ 155.819025] via_set_secondary_address(0x00000000) [ 155.819044] viafb 2D engine: imageblit ...many imageblits... [ 155.826516] Console: switching to colour frame buffer device 80x30 [ 155.826522] viafb_pan_display, address = 0 [ 155.826523] via_set_primary_address(0x00000000) [ 155.826527] via_set_secondary_address(0x00000000) ...many imageblits... [ 155.833889] fb0: Via frame buffer device 640x480-32bpp -- Ondrej Zary -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
Powered by blists - more mailing lists