Έχω προβλήματα με τον ήχο...σαν να τρέχει πού και πού...παίζει νά'ναι της RAM, γιατί συμβαίνει όταν έχω πολλά processes ανοιχτά...500MB/2GB...τι να πω...?
Αυτό το μήνυμα είναι προειδοποίηση οτι κατά την ενημέρωση των repositories δεν βρέθηκε κάποιο κλειδί για την επιβεβαίωση της αυθεντικότητας του repository - συνήθως έχει οδηγίες στα repositories για το πως να προσθέσεις το κλειδί στο apt. Tο παραπάνω όμως δε σε εμποδίζει από το να χρησιμοποιήσεις το repository, απλά μειώνεται η ασφάλεια του συστήματος (κοινώς μπορεί το repository να μην είναι αυτό που φαίνεται).necrofear_13 wrote:Παιδια οταν κανω sudo apt-get update μου βγαζει το παρακατω μηνυμα. W: GPG error: http://repository.cairo-dock.org intrepid Release: The following signatures couldn't be verified because the public key is not available: NO_PUBKEY 1392A97E41317877.Εχω ubuntu 8.04.Καμια ιδεα???
Linux multi-touch technology demo'd
Jun. 12, 2009
A development group at ENAC in Toulouse, France, reports that it has developed a proof of concept for adding iPhone-like multi-touch support to the Linux kernel. The group has released a video showing multi-touch effects such as resizing and rotating using Linux 2.6.30.
Based on Henrik Rydberg's recent additions to the Linux input system, and developed in collaboration with the Linux kernel team, the technology is billed as being true native multi-touch support for Linux. It was developed by Mohamed-Ikbel Boulabiar, Stephane Chatty, and Sebastien Hamdani, from the Interactive Computing Lab at the ENAC (Ecole Nationale de l'Aviation Civile) aeronautics academy in Toulouse, France. Their YouTube video demo of the multi-touch code, available at the end of our story, reveals the ability to swipe, flip, rotate, and resize using multiple fingers, as well as a water-ripple effect (pictured below).
http://www.linuxdevices.com/news/NS7566084773.html
Linus Torvalds (pictured) announced Linux kernel 2.6.30, adding several new filesystems, including the NILFS2 log-structured filesystem. Linux 2.6.30 enhancements include a local caching layer for NFS data, the RDS server cluster communications protocol, the Tomoyo security module, and support for LZMA and BZIP2 compression algorithms.
The 2.6.30 release arrives less than three months after Linux kernel 2.6.29, which added a wide variety of driver and header updates, WiMAX support, the embedded-oriented Squashfs filesystem, and a preliminary new Btrfs filesystem. The new kernel release further feeds Linux developers' insatiable appetite for new filesystems.
The new NILFS2 treats the whole disk as a consecutive list of blocks (or "log"), and never rewrites blocks. As a result, all modifications and creations are converted into sequential operations, which are said to be faster. Other NILFS2 improvements are said to include the ability to offer a more coherent historical view of operations, called "continuus snapshotting," enabling users to restore files that have been mistakenly destroyed only a few seconds previously.
In addition to the NILFS2 system, Linux 2.6.30 adds an EXOFS filesystem designed for object-based storage, and a POHMELFS distributed networking filesystem. Other filesystem enhancements include improved data security with the controversial new ext4 filesystem, as well as automatic flushing of files on renames/truncates in ext3, ext4, and Btrfs.
Beyond filesystems, the new release offers numerous incremental improvements, including enhanced power management for more robust system hibernation features, DRM support for Radeon R6xx/R7xx graphic cards, and hundreds of new and improved drivers. Many of the enhancements target data storage, including improved switching between RAID 5/6 modes.
Major new features of Linux 2.6.30 are said to include:
* NILFS2 -- This log-structured filesystem offers "continuous snapshotting" restore feature (see above).
* POHMELFS and DST -- POHMELFS (Parallel Optimized Host Message Exchange Layered File System) is a network distributed filesystem which is said to offer faster I/O operation compared to NFS. DST (Distributed network Storage) is said to streamline the creation of high-performance storage networks.
* Reliable Datagram Sockets (RDS) protocol support -- RDS provides a high bandwidth, low-latency, inter-process communication protocol and transport system between the servers in a cluster.
* Fastboot -- Intel's quick-booting technology performs storage scanning asynchronously, enabling the kernel to keep booting while storage devices are scanned in parallel.
* IEEE 802.11w -- A preliminary implementation of a proposed WiFi amendment that increases the security of 802.11's management frames, IEEE 802.11w is said to offer "wireless management frame protection support."
* Preadv()/pwritev() system calls -- These Red Hat contributed syscalls, which are also used in BSD, are "a pretty straightforward combination of pread/pwrite and readv/pwrite," says the kernel project.
* EXOFS -- This filesystem supports a new generation of experimental, object-based storage devices that offload work from the host, and offer a higher-level interface via an array of objects.
* NFS 4.1 -- A preliminary version of the IETF's NFS 4.1, the Linux implementation adds the mandatory-to-implement NFSv4.1 Sessions. Other features, including Parallel NFS, will be added in later releases.
* FS-Cache -- This caching filesystem caches data from networked filesystems disk, speeding up operations, similar to the CacheFS of other Unix OSes.
* Tomoyo -- The Tomoyo Mandatory Access Control (MAC) is an alternative to the Selinux and Smack security subsystems, and offers pathname-based access control.
* Filesystems performance improvements -- To improve disk I/O on fsync calls, changes have been to create an implicit internal fsync of a file after a rename or truncate in ext3, ext4, and Btrfs filesystems.
* LZMA/BZIP2 kernel image compression -- LZMA or BZIP2 can now be used for compression. The kernel size is said to be about 10 percent smaller with BZIP2 in comparison to the pre-existing GZIP, and about 33 percent smaller with LZMA.
* Microblaze support -- The new release supports the Xilinx MMU-less Microblaze CPU architecture.
Tuz
* Integrity Management Architecture -- The Trusted Computing Group (TCG)'s runtime Integrity Measurement Architecture(IMA) improves security, especially on systems with TPM chips.
* Tux returns -- The official codename of Linux 2.6.30 may be "Man-Eating Seals of Antiquity", but it might also be called "The Return of the Tux." The previous kernel release sent Tux (pictured, as always on the LinuxDevices masthead) on vacation as official mascot in order to showcase a Tasmanian devil called "Tuz" (pictured). Now that the Linux world is aware of the Australian species' endangered status, however, the penguin is back.
Επίσης σχετικά με filesystemsOn Tue, 24 Mar 2009, Kyle Moffett wrote:
>
> Regardless of any journalling, a power-fail or a crash is almost
> certainly going to cause "data loss" of some variety.
The point is, if you write your metadata earlier (say, every 5 sec) and
the real data later (say, every 30 sec), you're actually MORE LIKELY to
see corrupt files than if you try to write them together.
And if you write your data _first_, you're never going to see corruption
at all.
This is why I absolutely _detest_ the idiotic ext3 writeback behavior. It
literally does everything the wrong way around - writing data later than
the metadata that points to it. Whoever came up with that solution was a
moron. No ifs, buts, or maybes about it.
Linus
Δεν είμαι σίγουρος ότι θα παίξει αλλά νομίζω ότι πρέπει να κάνεις τα εξής σε debian/ubuntumarios wrote:Καλημέρα παιδιά, ως συνήθως απορία
Θέλω να κάνω downgrade τον kernel μου από τον 2.6.24-24 στον 2.6.20(μάλλον τον 2.6.20.21), οπότε αν μπορέσει κάποιος να μου στείλει ένα link με το που μπορεί να υπάρχουν τα αρχεία θα με βοηθήσει πολύ(δυστυχώς ότι έχω βρει είναι για 2.6.21 και μετά)!!!
Code: Select all
# apt-get install kernel-image-x.x.x-xxCode: Select all
# apt-get install kernel-image-2.6.20-21
Play and help! Τα πακέτα για τους πυρήνες ονόμάζονται linux-image οπότε κάνε έναmarios wrote:Το είχα δοκιμάσει αυτό και βγάζει ότι δεν υπάρχει το package 2.6.20-21(E: Couldn't find package kernel-image-2.6.20-21)
Anyway, thanks Master
Code: Select all
apt-cache search linux-image
Thanks, αλλά και αυτό δεν έχει για πριν τον 2.6.24alasondro wrote:Τα πακέτα για τους πυρήνες ονόμάζονται linux-image οπότε κάνε έναmarios wrote:Το είχα δοκιμάσει αυτό και βγάζει ότι δεν υπάρχει το package 2.6.20-21(E: Couldn't find package kernel-image-2.6.20-21)
Anyway, thanks Masterκαι δες τι υπάρχει έτοιμοCode: Select all
apt-cache search linux-image
Αμα δεν υπάρχει, δοκίμασε να το τρέξεις με wine.enum21 wrote:Υπάρχει κάτι αντίστοιχο του WinSCP για Ubuntu?
Αυτό που θέλεις είναι ένας ftp client. Λογικά αν χρησιμοποιείς gnome θα έχεις το gftp. Επίσης μπορείς να κατεβάσεις κάποιον άλλο όπως το filezilla που είπε ο cypher αλλά θα είσαι μια χαρά και με το gftp νομίζω.enum21 wrote:Υπάρχει κάτι αντίστοιχο του WinSCP για Ubuntu?
Play and help!
Τι σημαίνει πρακτικά αυτό?File system is implemented as single file compromising performance
κάπως έτσι λειτουργούν και οι virtual drives των WMnetharis wrote:Σημαίνει οτι η εγκατάσταση που προσφέρει το Wubi είναι πάνω σε loop device. Πρακτικά είναι ένα αρχείο που αναπαριστά έναν σκληρό δίσκο (χοντρικά). Aυτό που σου προσφέρει είναι ότι δεν χρειάζεται να κάνεις repartition το σκληρό σου, αλλά όμως είναι αρκετά πιο αργό, δεδομένου οτι είναι ένα αρχείο το οποίο αντιπροσωπεύει όλη τη δομή ενός σκληρού.
Νομίζω είναι η ίδια τεχνική που χρησιμοποιούσε το ΖipSlack back in the days.
