From: "Giuseppe Bilotta" <giuseppe.bilotta@gmail.com>
To: "Luca Tettamanti" <kronos@people.it>
Cc: linux-fbdev-devel@lists.sourceforge.net,
"Andrew Morton" <akpm@osdl.org>,
"Dave Airlie" <airlied@gmail.com>,
linux-kernel@vger.kernel.org
Subject: Re: [Linux-fbdev-devel] [PATCH] nvidiafb: allow ignoring EDID info
Date: Mon, 5 Feb 2007 22:28:36 +0100 [thread overview]
Message-ID: <cb7bb73a0702051328n50c889d9o461ac2bb9f9ea75e@mail.gmail.com> (raw)
In-Reply-To: <20070205201824.GA13431@dreamland.darkstar.lan>
On 2/5/07, Luca Tettamanti <kronos@people.it> wrote:
> get-edid uses the BIOS, while the other two talk directly over the I2C
> bus.
>
> Try loading i2c-dev (I2C_CHARDEV); With i2cdump[1] you can read the EDID
> block, which resides at address 0x50:
>
> i2cdump N 0x50 (where N is the bus number)
>
> If you are unshure about bus number try with all the available
> /dev/i2c-* devices (you may want to unload HW monitor drivers first, so
> you don't poke at random stuff).
No luck. i2c-dev and dependencies are loaded
""" lsmod | grep i2c reports """
i2c_i801 7404 0
i2c_isa 5152 0
i2c_piix4 8140 0
i2c_algo_pcf 6180 0
i2c_algo_pca 5380 0
i2c_algo_bit 8424 0
i2c_dev 8548 0
i2c_core 19680 7
i2c_i801,i2c_isa,i2c_piix4,i2c_algo_pcf,i2c_algo_pca,i2c_algo_bit,i2c_dev
""""
There is no such thing as /dev/i2c* UNLESS I load nvidiafb. When I
load that, I get three busses (i2c-0, -1, and -2), but i2cdump N 0x50
gives me a nice tableau of X's all around, for all values of N. This
is using kernel 2.6.18-3 stock Debian kernel. I'll keep trying with
some variations, to see if I can get more sensible information.
--
Giuseppe "Oblomov" Bilotta
next prev parent reply other threads:[~2007-02-05 21:28 UTC|newest]
Thread overview: 67+ messages / expand[flat|nested] mbox.gz Atom feed top
2007-01-28 10:48 [PATCH] nvidiafb: allow ignoring EDID info Giuseppe Bilotta
2007-01-28 11:05 ` Prakash Punnoor
2007-01-29 0:08 ` Andrew Morton
2007-01-29 0:08 ` Andrew Morton
2007-01-29 0:12 ` [Linux-fbdev-devel] " Dave Airlie
2007-01-29 0:12 ` Dave Airlie
2007-01-29 0:27 ` [Linux-fbdev-devel] " Andrew Morton
2007-01-29 0:27 ` Andrew Morton
2007-01-29 0:29 ` [Linux-fbdev-devel] " Andrew Morton
2007-01-29 0:29 ` Andrew Morton
2007-01-29 0:39 ` [Linux-fbdev-devel] " Dave Airlie
2007-01-29 0:39 ` Dave Airlie
2007-01-29 14:37 ` [Linux-fbdev-devel] " Giuseppe Bilotta
2007-01-30 20:33 ` Luca Tettamanti
2007-01-30 20:33 ` Luca Tettamanti
2007-02-04 20:17 ` [Linux-fbdev-devel] " Luca Tettamanti
2007-02-04 21:17 ` Giuseppe Bilotta
2007-02-05 20:18 ` Luca Tettamanti
2007-02-05 20:18 ` Luca Tettamanti
2007-02-05 21:28 ` Giuseppe Bilotta [this message]
2007-02-06 21:22 ` [Linux-fbdev-devel] " James Simmons
2007-02-06 21:22 ` James Simmons
2007-02-07 23:48 ` [Linux-fbdev-devel] " Luca Tettamanti
2007-02-07 23:48 ` Luca Tettamanti
2007-02-08 0:19 ` [Linux-fbdev-devel] " Giuseppe Bilotta
2007-02-11 18:17 ` Luca Tettamanti
2007-02-11 18:17 ` Luca Tettamanti
2007-02-13 9:25 ` [Linux-fbdev-devel] " Giuseppe Bilotta
2007-02-17 18:14 ` Luca Tettamanti
2007-02-17 18:14 ` Luca Tettamanti
2007-02-17 18:46 ` [Linux-fbdev-devel] " Giuseppe Bilotta
2007-02-08 17:56 ` James Simmons
2007-02-08 17:56 ` James Simmons
2007-02-07 23:57 ` [Linux-fbdev-devel] " Luca Tettamanti
2007-02-07 23:57 ` Luca Tettamanti
2007-02-06 20:37 ` [Linux-fbdev-devel] " James Simmons
2007-02-06 23:08 ` Giuseppe Bilotta
2007-02-21 23:43 ` Antonino A. Daplas
2007-02-21 23:43 ` Antonino A. Daplas
2007-02-22 8:01 ` [Linux-fbdev-devel] " Giuseppe Bilotta
2007-02-22 8:40 ` Antonino A. Daplas
2007-02-22 8:40 ` Antonino A. Daplas
[not found] ` <cb7bb73a0702220548s55380f7fk995726ffd349823b@mail.gmail.com>
[not found] ` <1172153358.4306.17.camel@daplas>
2007-02-22 15:55 ` [Linux-fbdev-devel] " Giuseppe Bilotta
2007-02-22 16:21 ` Antonino A. Daplas
2007-02-22 16:21 ` Antonino A. Daplas
2007-02-22 19:08 ` [Linux-fbdev-devel] " Giuseppe Bilotta
2007-02-22 23:34 ` Antonino A. Daplas
2007-02-22 23:34 ` Antonino A. Daplas
2007-02-23 13:34 ` [Linux-fbdev-devel] " Giuseppe Bilotta
2007-02-23 13:34 ` Giuseppe Bilotta
2007-02-24 7:04 ` [Linux-fbdev-devel] " Antonino A. Daplas
2007-02-24 7:04 ` Antonino A. Daplas
2007-02-24 9:16 ` [Linux-fbdev-devel] " Giuseppe Bilotta
2007-02-24 9:16 ` Giuseppe Bilotta
2007-02-24 21:16 ` [Linux-fbdev-devel] " Antonino A. Daplas
2007-02-25 10:26 ` Giuseppe Bilotta
2007-02-25 10:26 ` Giuseppe Bilotta
2007-02-25 11:10 ` [Linux-fbdev-devel] " Antonino A. Daplas
2007-02-25 11:10 ` Antonino A. Daplas
2007-02-25 13:16 ` [Linux-fbdev-devel] " Giuseppe Bilotta
2007-02-25 13:16 ` Giuseppe Bilotta
2007-02-26 12:46 ` [Linux-fbdev-devel] " Antonino A. Daplas
2007-02-22 17:03 ` Antonino A. Daplas
2007-02-22 20:39 ` Luca Tettamanti
2007-02-22 20:39 ` Luca Tettamanti
2007-02-22 23:34 ` [Linux-fbdev-devel] " Antonino A. Daplas
2007-02-22 23:34 ` Antonino A. Daplas
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