linux-kernel - Re: Help with writing to micro SD card

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

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [day] [month] [year] [list]

Message-ID: <20150514230731.6f063685@lxorguk.ukuu.org.uk>
Date:	Thu, 14 May 2015 23:07:31 +0100
From:	One Thousand Gnomes <gnomes@...rguk.ukuu.org.uk>
To:	Larry Finger <Larry.Finger@...inger.net>
Cc:	"linux-mmc@...r.kernel.org" <linux-mmc@...r.kernel.org>,
	LKML <linux-kernel@...r.kernel.org>
Subject: Re: Help with writing to micro SD card

> When I received the tablet, I used dd to back up the internal card. When I used 
> a block size of 4M in that operation, it also froze; however, the standard block 
> size (512) worked. That suggests that the standard Linux r/w operations on the 
> device are too fast.

Unlikely.

> What should I do to get some debug information?

As its Baytrail-T make sure you have

- Current BIOS
- Latest kernel

If it persists try disabling power management on the SD card interface.
It may be worth reading through the ASUS T100TA bug reports and
workarounds as that is probably the most poked at platform for BYT/T


Alan
--
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/