Re: Screen goes blank after "EDID checksum is invalid" errors
On 06.09.2015 19:40, Stephen Powell wrote:
> The OP said that what he included in this problem report came from
> another problem report, because it scrolled off the screen too fast
> for him to give actual data.
True, but it was pretty damn close (lots of 0xffs)
> (Perhaps he doesn't know about
> "dmesg|less".)
Oh I do but of course didn't think to check :-/ At the time I fired off
the posting I had actually just discovered that the system was still
alive (I thought it was ooopsing and unresponsive, the hardware has no
indicators whatsoever, so there's that).
Since I don't need fancy graphics or let alone X on that system, I
figured out that the module gma500_gfx was causing the problems in my
case. I just blacklisted the sucker and the problem's gone.
Just for info, here's what happens when I modprobe it manually
(accompanied with a blanked screen):
[ 750.356470] [drm] Initialized drm 1.1.0 20060810
[ 750.412907] ACPI: Video Device [GFX0] (multi-head: yes rom: no
post: no)
[ 750.413121] [Firmware Bug]: ACPI: No _BQC method, cannot determine
initial brightness
[ 750.416940] acpi device:03: registered as cooling_device2
[ 750.425323] acpi device:04: registered as cooling_device3
[ 750.425586] input: Video Bus as
/devices/LNXSYSTM:00/LNXSYBUS:00/PNP0A08:00/LNXVIDEO:00/input/input11
[ 750.432866] [drm] Supports vblank timestamp caching Rev 2 (21.10.2013).
[ 750.432895] [drm] No driver support for vblank timestamp query.
[ 750.552062] [drm:drm_edid_block_valid] *ERROR* EDID checksum is
invalid, remainder is 130
[ 750.552096] Raw EDID:
[ 750.552109] 00 ff ff ff ff ff ff 00 ff ff ff ff ff ff ff ff
[ 750.552126] ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff
[ 750.552142] ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff
[ 750.552159] ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff
[ 750.552175] ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff
[ 750.552192] ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff
[ 750.552209] ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff
[ 750.552225] ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff
[ 750.656185] [drm:drm_edid_block_valid] *ERROR* EDID checksum is
invalid, remainder is 130
[ 750.656252] Raw EDID:
[ 750.656282] 00 ff ff ff ff ff ff 00 ff ff ff ff ff ff ff ff
[ 750.656319] ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff
[ 750.656356] ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff
[ 750.656393] ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff
[ 750.656430] ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff
[ 750.656467] ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff
[ 750.656504] ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff
[ 750.656541] ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff
[ 750.765320] [drm:drm_edid_block_valid] *ERROR* EDID checksum is
invalid, remainder is 130
[ 750.765391] Raw EDID:
[ 750.765422] 00 ff ff ff ff ff ff 00 ff ff ff ff ff ff ff ff
[ 750.765459] ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff
[ 750.765496] ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff
[ 750.765533] ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff
[ 750.765570] ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff
[ 750.765607] ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff
[ 750.765644] ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff
[ 750.765681] ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff
[ 750.869209] [drm:drm_edid_block_valid] *ERROR* EDID checksum is
invalid, remainder is 130
[ 750.869271] Raw EDID:
[ 750.869300] 00 ff ff ff ff ff ff 00 ff ff ff ff ff ff ff ff
[ 750.869336] ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff
[ 750.869373] ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff
[ 750.869410] ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff
[ 750.869447] ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff
[ 750.869484] ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff
[ 750.869521] ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff
[ 750.869558] ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff
[ 750.869601] gma500 0000:00:02.0: LVDS-1: EDID block 0 invalid.
[ 751.338582] gma500 0000:00:02.0: trying to get vblank count for
disabled pipe 0
[ 751.338656] gma500 0000:00:02.0: trying to get vblank count for
disabled pipe 0
[ 751.440308] fbcon: psbdrmfb (fb0) is primary device
[ 751.812576] Console: switching to colour frame buffer device 128x48
[ 751.823950] gma500 0000:00:02.0: fb0: psbdrmfb frame buffer device
[ 751.824106] gma500 0000:00:02.0: registered panic notifier
[ 751.832812] gma500 0000:00:02.0: Backlight lvds set brightness 7a127a12
[ 751.832988] [drm] Initialized gma500 1.0.0 20140314 for 0000:00:02.0
on minor 0
[ 751.841560] gma500 0000:00:02.0: Backlight lvds set brightness 7a127a12
Also note that the kernel actually oopses when I rmmod the module again.
Somethign is really wrong, but I can't be bothered to find out what
exactly it is (don't need the module)..
Thanks for your hints,
Best regards,
Johannes
--
>> Wo hattest Du das Beben nochmal GENAU vorhergesagt?
> Zumindest nicht öffentlich!
Ah, der neueste und bis heute genialste Streich unsere großen
Kosmologen: Die Geheim-Vorhersage.
- Karl Kaos über Rüdiger Thomas in dsa <hidbv3$om2$1@speranza.aioe.org>
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