Re: [Libreboot] debug log on unsupported panels

[Arthur Heymans]

Found something to get logs more easily.

Forget about ehci debug. Libreboot can directly fetch logs from mem.
This can be done using "cbmem -c". This tool is in coreboot/util. 

> Forgot something: could you also provide me dmesg with kernel param:
> drm.debug=0x1e log_buf_len=1M (if running linux4.1 or later, else use
> 0xe) of the same system.
>
> Thanks a lot
>
> "Bella Riosa" <address@hidden> writes:
>
>> Will provide you some logs as soon i return home (this weekend)
>>
>>> Gesendet: Mittwoch, 22. Juni 2016 um 00:24 Uhr
>>> Von: "Arthur Heymans" <address@hidden>
>>> An: "Tudor SUCIU" <address@hidden>
>>> Cc: libreboot <address@hidden>
>>> Betreff: Re: [Libreboot] debug log on unsupported panels
>>>
>>> Most x200 screens are known to work.
>>> I really need coreboot debug logs of not working devices on libreboot_beta.
>>> 
>>> Tudor SUCIU <address@hidden> writes:
>>> 
>>> > Hello Arthur,
>>> >
>>> > I will try to send you as soon as possible the logs. I don't have a
>>> > working setup yet for ehci debug.
>>> > I can send you the edid's of the two screens from two x200. One of
>>> > them is not tested yet.
>>> > Maybe you will give me the good news that the untested one is old
>>> > enough and should work.
>>> >
>>> > On Tue, Jun 21, 2016 at 11:19 PM, Arthur Heymans <address@hidden>
>>> > wrote:
>>> >
>>> >     It seems that there are logs on the libreboot.org website.
>>> >     They are generated while running libreboot stable.
>>> >     I must specify that I need logs while running libreboot_beta.
>>> >     
>>> >     
>>> >     
>>> >     Arthur Heymans <address@hidden> writes:
>>> >     
>>> >     > Hi
>>> >     >
>>> >     > Some display panels don't work in libreboot (you don't see grub)
>>> >     but
>>> >     > work fine in GNU/linux. This mostly happens on t400/t500 with
>>> >     higher res
>>> >     > panels. This is caused by libreboot not handling display's
>>> >     correctly.
>>> >     >
>>> >     > I want to try to fix this but I will need libreboot debug logs
>>> >     to know
>>> >     > what the exact nature of the problem is.
>>> >     > I need someone with a not working/supported panel to follow the
>>> >     ehci debug
>>> >     > guide:
>>> >     > https://libreboot.org/docs/install/bbb_ehci.html
>>> >     > and email the log. (it is possible that log verbosity has to be
>>> >     increased)
>>> >     > I would also need a hexdump of the edid file found in:
>>> >     > /sys/class/drm/card0-LVDS-1/edid
>>> >     >
>>> >     > Kind regards
>>> >     > --
>>> >     > Arthur Heymans
>>> >     
>>> >     
>>> >
>>> >
>>> >
>>> >
>>> <#secure method=pgpmime mode=sign>
>>> 
>>> -- 
>>> Arthur Heymans
>>> 
>>> 
> <#secure method=pgpmime mode=sign>
>
>
<#secure method=pgpmime mode=sign>

-- 
Arthur Heymans