Difference between revisions of "Talk:Udev"

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m (Removed "iscsi device" section: Wrong info.: rm closed discussion)
(moved from Talk:CF and SD card install#Explain about SD (unchanged, no replies added))
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:It might, unfortunately its {{Pkg|gtk3}} dependency discouraged me from even trying... -- [[User:Lahwaacz|Lahwaacz]] ([[User talk:Lahwaacz|talk]]) 09:01, 28 June 2014 (UTC)
 
:It might, unfortunately its {{Pkg|gtk3}} dependency discouraged me from even trying... -- [[User:Lahwaacz|Lahwaacz]] ([[User talk:Lahwaacz|talk]]) 09:01, 28 June 2014 (UTC)
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== Explain about SD ==
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''[Moved from [[Talk:CF and SD card install#Explain about SD]]. -- [[User:Kynikos|Kynikos]] ([[User talk:Kynikos|talk]]) 02:32, 27 December 2014 (UTC)]''
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Why this page is redirect to beginners guide? I am searching info about mounting SD cards. And there is not such article? Does this mean, that we should delete this redirection? — [[User:Agent0|Agent0]] ([[User_talk:Agent0|talk]]|[[Special:Contributions/Agent0|contribs]]) 17:19, 23 December 2014 (UTC)
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:Look at [https://wiki.archlinux.org/index.php?title=CF_and_SD_card_install&diff=257478&oldid=239602 this] edit. A time ago page became useless, but instead of removing it at all, its content has been replaced with redirect.
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:That's okay that there're many "garbage" redirects. They just don't disturb anybody and shouldn't disturb you ;) — [[User:Blackx|blackx]] ([[User_talk:Blackx|talk]]|[[Special:Contributions/Blackx|contribs]]) 12:46, 24 December 2014 (UTC)
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:: Ok, I'll let them be. But we still need an article about SD cards and how to mount them. — [[User:Agent0|Agent0]] ([[User_talk:Agent0|talk]]|[[Special:Contributions/Agent0|contribs]]) 16:04, 24 December 2014 (UTC)
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:::Maybe you mean SD card readers? Because if the device works fine, mounting an SD card should be as easy as inserting it and [[mount]]ing it :) -- [[User:Kynikos|Kynikos]] ([[User talk:Kynikos|talk]]) 02:30, 25 December 2014 (UTC)
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:::: Yes, I mean about internal SD card readers. I have googled a bit and find out, that dev is not like usual /dev/sdXY, but /dev/mmcblk0p1. Just could not find this info in ArchWiki, searched SD and found this useless redirection. — [[User:Agent0|Agent0]] ([[User_talk:Agent0|talk]]|[[Special:Contributions/Agent0|contribs]]) 02:58, 25 December 2014 (UTC)
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:::::But have you tested it on real hardware? On my laptop the built-in SD card reader is represented by {{ic|/dev/sdb}}. -- [[User:Kynikos|Kynikos]] ([[User talk:Kynikos|talk]]) 01:05, 26 December 2014 (UTC)
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:::::: Yes, I have tested it with real hardware. On my [[Lenovo IdeaPad Yoga 13]] I have the following:
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$ ls /dev/sd*
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/dev/sda  /dev/sda1  /dev/sda2  /dev/sda3  /dev/sda4  /dev/sda5  /dev/sda6
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[agent0@yoga ~]$ ls /dev/mmcblk*
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/dev/mmcblk0  /dev/mmcblk0p1
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[agent0@yoga ~]$
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:::::: There are six partitions on internal SSD and no any sdb. But, there is mmcblk0p1 in /dev directory. — [[User:Agent0|Agent0]] ([[User_talk:Agent0|talk]]|[[Special:Contributions/Agent0|contribs]]) 10:55, 26 December 2014 (UTC)
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:::::::Does you're really have ArchLinux on a tablet computer :D? Such device names are widely used on different Android devices, and I think this information is not related exactly to ArchLinux. Generally, device names are driver-specific and note that your computer has just a slot for SD cards, not a card reader in the usual sense. — [[User:Blackx|blackx]] ([[User_talk:Blackx|talk]]|[[Special:Contributions/Blackx|contribs]]) 11:41, 26 December 2014 (UTC)
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:::::::: My PC is not a tablet only. It is convertable from tablet to notebook. Maybe, inormation is not related exactly to ArchLinux, but I think that this should be at least once be covered in one of the articles, for example, [[USB storage devices]]. What is the difference between card reader and SD slot on laptop? — [[User:Agent0|Agent0]] ([[User_talk:Agent0|talk]]|[[Special:Contributions/Agent0|contribs]]) 11:49, 26 December 2014 (UTC)
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:::::::::I'd say that this is more related to [[udev]], but what exactly would you like to write? That an SD card reader could be loaded with a non-sd* name? Besides, after inserting an SD card, the device and partition(s) should show up in {{ic|lsblk}}: why didn't that make clear which was the partition to mount? -- [[User:Kynikos|Kynikos]] ([[User talk:Kynikos|talk]]) 12:59, 26 December 2014 (UTC)
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::::::::::Yes, exactly, I just wanted to know how device is called in /dev. I do not know, maybe it will be called some another way in other PC. But yes, can we make amendment in [[udev]] saying how to detect it (lsblk or blkid)? [http://pkill-9.com/mount-usb-micro-sd-card-linux-automount/ here] I found some usefull instructions. — [[User:Agent0|Agent0]] ([[User_talk:Agent0|talk]]|[[Special:Contributions/Agent0|contribs]]) 13:33, 26 December 2014 (UTC)

Revision as of 02:32, 27 December 2014

usbtiny extra udev rule?

In the udev rules for usbtiny, there are 2 rules listed. Howver, adding the second one to my udev rules resulted in me not an "rc=-1" communication error when I tried to use my usbtiny. When I commented out this rule:

"SBSYSTEMS=="usb", ATTRS{idVendor}=="16c0", ATTRS{idProduct}=="0479", GROUP="users", MODE="0666"

everything worked fine. Not sure what the root of the issue is, but this rule makes the usbtiny programer unusable. -- Ssalenik (talk) 04:09, 6 March 2012‎

About udev rules

udevadm info -a -n [device name]

and

udevadm info -a -p $(udevadm info -q path -n [device name])

gives the same output but the latter is recommended by some Khampf (talk) 20:57, 5 February 2013 (UTC)

Use of 'uaccess' instead of GROUP and MODE?

Bug openobex - relies on non-existing group plugdev, conflict with systemd made me rethink the rules I have been using for Logitech_Unifying_Receiver.

Currently, the following rule is taught to the user:

SUBSYSTEMS=="usb", ATTRS{idVendor}=="1781", ATTRS{idProduct}=="0c9f", GROUP="users", MODE="0666"

What about changing it to:

SUBSYSTEMS=="usb", ATTRS{idVendor}=="1781", ATTRS{idProduct}=="0c9f", TAG+="uaccess"

As a developer note, Ubuntu versions before 13.04 Raring needs TAG+="udev-acl" instead of uaccess. For compatibility with modern and legacy systems:

SUBSYSTEMS=="usb", ATTRS{idVendor}=="1781", ATTRS{idProduct}=="0c9f", TAG+="uaccess", TAG+="udev-acl"

References:

Lekensteyn (talk) 10:16, 6 June 2013 (UTC)

Printers

Udev#Printers:

If you use multiple printers, /dev/lp[0-9] devices will be assigned randomly on boot, which will break e.g. CUPS configuration.

I don't use multiple printers, but doesn't system-config-printer handle this automatically? If so, a tip could be added. --Alad (talk) 08:38, 28 June 2014 (UTC)

It might, unfortunately its gtk3 dependency discouraged me from even trying... -- Lahwaacz (talk) 09:01, 28 June 2014 (UTC)

Explain about SD

[Moved from Talk:CF and SD card install#Explain about SD. -- Kynikos (talk) 02:32, 27 December 2014 (UTC)]

Why this page is redirect to beginners guide? I am searching info about mounting SD cards. And there is not such article? Does this mean, that we should delete this redirection? — Agent0 (talk|contribs) 17:19, 23 December 2014 (UTC)

Look at this edit. A time ago page became useless, but instead of removing it at all, its content has been replaced with redirect.
That's okay that there're many "garbage" redirects. They just don't disturb anybody and shouldn't disturb you ;) — blackx (talk|contribs) 12:46, 24 December 2014 (UTC)
Ok, I'll let them be. But we still need an article about SD cards and how to mount them. — Agent0 (talk|contribs) 16:04, 24 December 2014 (UTC)
Maybe you mean SD card readers? Because if the device works fine, mounting an SD card should be as easy as inserting it and mounting it :) -- Kynikos (talk) 02:30, 25 December 2014 (UTC)
Yes, I mean about internal SD card readers. I have googled a bit and find out, that dev is not like usual /dev/sdXY, but /dev/mmcblk0p1. Just could not find this info in ArchWiki, searched SD and found this useless redirection. — Agent0 (talk|contribs) 02:58, 25 December 2014 (UTC)
But have you tested it on real hardware? On my laptop the built-in SD card reader is represented by /dev/sdb. -- Kynikos (talk) 01:05, 26 December 2014 (UTC)
Yes, I have tested it with real hardware. On my Lenovo IdeaPad Yoga 13 I have the following:
$ ls /dev/sd*
/dev/sda  /dev/sda1  /dev/sda2  /dev/sda3  /dev/sda4  /dev/sda5  /dev/sda6
[agent0@yoga ~]$ ls /dev/mmcblk*
/dev/mmcblk0  /dev/mmcblk0p1
[agent0@yoga ~]$
There are six partitions on internal SSD and no any sdb. But, there is mmcblk0p1 in /dev directory. — Agent0 (talk|contribs) 10:55, 26 December 2014 (UTC)
Does you're really have ArchLinux on a tablet computer :D? Such device names are widely used on different Android devices, and I think this information is not related exactly to ArchLinux. Generally, device names are driver-specific and note that your computer has just a slot for SD cards, not a card reader in the usual sense. — blackx (talk|contribs) 11:41, 26 December 2014 (UTC)
My PC is not a tablet only. It is convertable from tablet to notebook. Maybe, inormation is not related exactly to ArchLinux, but I think that this should be at least once be covered in one of the articles, for example, USB storage devices. What is the difference between card reader and SD slot on laptop? — Agent0 (talk|contribs) 11:49, 26 December 2014 (UTC)
I'd say that this is more related to udev, but what exactly would you like to write? That an SD card reader could be loaded with a non-sd* name? Besides, after inserting an SD card, the device and partition(s) should show up in lsblk: why didn't that make clear which was the partition to mount? -- Kynikos (talk) 12:59, 26 December 2014 (UTC)
Yes, exactly, I just wanted to know how device is called in /dev. I do not know, maybe it will be called some another way in other PC. But yes, can we make amendment in udev saying how to detect it (lsblk or blkid)? here I found some usefull instructions. — Agent0 (talk|contribs) 13:33, 26 December 2014 (UTC)