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Search found 1274 results on 51 pages for 'jack chu'.

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  • stdout and key press

    - by Jack
    Hi, when in console, if I press a key, some interrupt controller sends code of that key to CPU, which looks into some table and than represent that keypress by printing some charracter to stdout. But, is keyboard sending an ASCII code of that key, or just some standardised code? Since there is so many languages and extra characters, OS must further translate its code into some character according to user selected scheme, I guess. I ask, becouse I am from Czech Republic, and we use some characters that do not exists in standart ASCII code. So I was thinking, if I enter this character into a console, and then print it, lets say in C++ using cin and cout, and I have set locale to Czech, stdin must actually send some non-ASCII code of the character I pressed to input stream. Am I right?

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  • Windows powering off after "preparing your desktop" stage.

    - by Jack
    Windows 7 64 bit. The only recent change was I installed two updates for MS Office, and a cumulative security update for IE. As soon as I choose a user and login, after loading my user profile it states the preparing your desktop message, and then powers off. I have used DaRT to check the event log, but nothing is recorded. Ideas?

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  • Windows 8 Pro Homegroup Not Allowing Access to Shared Files

    - by Jack Herr
    I have two pc's and a laptop. With all three running Windows 7, homegroup worked perfectly, with all computers able to access the files on the others exactly as one would expect. I installed Windows 8 Pro, which I downloaded recently from the MSDN website, on the laptop. From the info on the MSDN website, I believe the version downloaded is the official release version, not a release candidate. The install preserved all settings, apps, and files. I cannot connect to the homegroup from the laptop. Well, not exactly. I joined the homegroup during the install, and later left and rejoined, that was advertised as being offered by one of the pc's (not sure why that one was picked and not the other or both). This homegroup appears in my "computer" folder in the file explorer, offering files from that pc. But it excludes documents (only the music, pix, videos, and playlists folders on the one computer appear). I can actually access those files from the laptop. But the Homegroup folder, which actually shows all the computers by account and computer name and includes documents from both computers, does not open those folders when clicked. The computers listed by name in the Network folder give me a login that doesn't work. It asks for a username and password, no combinations of which work. Further, the following error message appears before the login is even attempted: "The system cannot contact a domain controller to service the authentication request. Please try again later." The two windows 7 pc's continue to share all files, including documents, seemlessly. I can also get to the laptop shared files, which I shared during setup, from either pc. Any ideas?

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  • wusa in server 2008 R2

    - by Jack
    I need to use wusa to uninstall a particular update that is causing a reboot loop. I can access winre and dism, but wusa gives command not found. Does wusa not come with r2, or is it not available in the built-in WinRE or what?

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  • Curl authentication

    - by Jack Humphries
    I am trying to download a file with cURL from a password protected directory on my site. It is not working. Instead of the downloading the requested file, it downloads a HTML file that says, "Authentication Required!" I'm not sure what the problem is. I've tried both of these (with the same result). The username and password are correct (and if the link below is used in a web browser, the file downloads successfully). 1) The username and password are included as part of the URL. curl https://username:[email protected]/auth/file.dmg --O /file.dmg; 2) The username and password are included as an option. curl -u username:wordpass.1 https://www.example.com/auth/file.dmg --O /file.dmg;

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  • How to test/debug bad network wiring?

    - by Jack Lloyd
    I recently bought a place already wired with Cat 5E (8 ports, leading to a central closet). However attempting to get link, nothing works. On closer examination, it was obvious that the ends in the closet were wired backwards (brown on pin 1, etc). The jacks that I've pulled out of the wall do look to be correctly done. However, testing with a network cable tester shows zero link between any of the jacks and any of the ports in the closet - I had expected to just see a 1/8, 2/7, ... 8/1 mismatch, but instead get nothing at all. The runs are accessible and look neat, though they take some bends that seem quite sharp and are in some cases much longer than they need to be (the person who put this in was a professional electrician but I suspect this was the first time he ran network cabling). My best guess at this point is that he either bought bad cable, or put so much tension on it that he snapped wires. Though it seems surprising/unlikely that I wouldn't get at least one active wire on one of the 8 lines. So, my question: is there anything else I should try or test before I go ripping out everything and running new cable?

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  • x86 exceptions and flags

    - by b-gen-jack-o-neill
    Hi, please, I know that when you for example divide by zero, the aproptiate flag is set in CPU flag register. But today I read that there are special interrupt vectors (I think the first 16 in IVT) that are used for such conditions like dividing by zero. So, what I want to ask is, does any situation that couses change som flag also triggers apropriate interrupt? Becouse in school, we used conditional jumps that checks wheather carry flag has been set or not, and I don´t remember there was some interrupt triggerd by that. So I am pretty confused now.

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  • Securing php on a shared apache

    - by Jack
    I'm going to install apache+php in a server where two users, A and B, will deploy their website. I'm trying to achieve isolation of users' space for security reasons: that is no scripts from site A should be able to read files in site B. To achieve this I installed suphp. Website files of user A are owned by A:A with perm=700 and user of B are owned by B:B with perm=700. Suphp works great, but apache complains about permissions to read .htaccess. How can I let apache to read .htaccess in every dir of A and B while keeping isolation between site A and site B? I played with ownership (group = www-data) and permissions (750) but I found no way to keep isolation granted. Any idea? Maybe by running apache as root, but in this case are there any drawbacks?

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  • Significant OS X Finder lag when listing directories/files

    - by Jack Sleight
    I'm experiencing some significant OS X finder lag, that seems to be purely an issue with Finder itself, and not the HD or any other part of OS X (I'll explain below). The lag only appears to be when listing directories/files, where I'm seeing up to twelve or so seconds of lag (the folder opens with a blank list and the spinner going in the bottom right). This happens with both the local SSD and network drives (connected via ethernet or wifi) Browsing both local and network drives in terminal and listing directories is instant I can actually browse files on my NAS from my phone over a 3G connection from the other side of the country faster than Finder can when connected to the local network (madness!) Can anyone help? Thanks.

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  • File server share access intermittent/slow/machine unstable: win2k8r2

    - by Jack B.
    I have a file server running Win2k8R2 on an older HP DL380G4. It has nothing set up on it other than file sharing. All drivers/firmware/updates installed. The file server is used as a dump for a bunch of test machines - so essentially a lot of small files are being written to it. It was working fine until it started showing the following symptoms: Shares became either very slow/intermittent or could not access them at all. Logging in the the server, you could use it like normal but windows would start freezing and eventually you had to hard reboot it because nothing was responsive. After rebooting, it would work fine for 20min-2hours and then degrade into this broken state again. Some info after investigation: HP Raid Config utility shows the Raid array as functioning properly (RAID5 btw). Event log shows a bunch of DoS attacks from the test machines, saying it has disconnected the connection a. AFAIK (not part of my job) the test machines haven't changed the way they log information to this server or the amount of them hasn't increased. b. Nothing is infected, this server was scanned fully, and the test machines are re-imaged almost daily. Nothing in performance monitor shows as anything being pegged at maximum (CPU/HD/Network/RAM) I installed MS Network Monitor and it is showing a lot of traffic The server was using one gigabit Ethernet connection, I connected the second one as well with the same results. Forgot to add - one of the commonly written to dirs on the share has over 16k subdirs in it, with a crapton of small files within those dirs. Some of the OS instability was slow access to the drive which has this directory - perfmon doesn't show much activity on the HD though so I'm not sure if this crowded dir is the cause. Here is one important fact: I ran into this issue 2-3 months ago, couldn't figure it out, but I had a spare identical machine so I swapped them out (thought it was related to the machine), and now I have the same issue. Also, the computer will be stable if I turn off file sharing. So is the server just getting DoS'd by the test machines? I've never dealt with such an issue. Is instability in the server's OS common when getting DoS'd? Is there anything I can do to confirm this before telling the owners of the test machines to optimize their traffic? (I'm not sure what they'll be able to do). Is there something within Win2k8R2 that can balance the traffic across the two NICs? Any help would be appreciated. Update: Another thought - the drive with the share is RAID5 across 6 SCSI320 300GB HDs. They are near full capacity about 100GB from 1TB left. Could the amount of tiny files could be causing some weirdness with the parity in this array? I think I've read something about this in the past but I'm no expert on RAID.

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  • Technicolor TG582n with external DHCP server [on hold]

    - by Jack
    We have a small home setup with a Technicolor TG582n on Plusnet ISP. We have a Samba4 DC with DNS forwarding enabled. The DC forwards to the Technicolor. However, the client machines have their DNS settings manually set. This is an annoyance when using laptops on other networks. We would like to have DHCP handled on the server machine, such that when a client connects to the Technicolor, it gets its IP and DNS information from the DHCP server, eliminating the need to manually set adapter DNS settings. However, I cannot find an option to disable DHCP on the Technicolor and am not completely clear on how one would point DHCP services to the server from the Technicolor if there were the option. So, how would one make the Technicolor use an external server for DHCP leases?

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  • problem with zsh interactive shell

    - by Jack
    When I use zsh in interactive mode, I get some glitches. This mainly happens when the command spills over onto a new line and I use backspace, with backspace leaving behind some glitches on the screen and moving the cursor to an odd position. It happens in a VT, in xterm and urxvt, although it is most noticeable with my chosen terminal, urxvt. When I use zsh as a login shell, it does not happen at all. What could be causing this?

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  • ApplicationPoolIdentity IIS 7.5 to SQL Server 2008 R2 not working.

    - by Jack
    I have a small ASP.NET test script that opens a connection to a SQL Server database on another machine in the domain. It isn't working in all cases. Setup: IIS 7.5 under W2K8R2 trying to connect to a remote SQL Server 2008 R2 instance. All machines are in the same domain. Using the ApplicationPoolIdentity for the web site it fails to connect to the SQL Server with the following: Login failed for user 'NT AUTHORITY\ANONYMOUS LOGON'. Description: An unhandled exception occurred during the execution of the current web request. Please review the stack trace for more information about the error and where it originated in the code. Exception Details: System.Data.SqlClient.SqlException: Login failed for user 'NT AUTHORITY\ANONYMOUS LOGON'. However if I switch the Process Model Identity to NETWORK SERVICE or my domain account the database connection is successful. I've granted the \$ access in SQL Server. I am not doing any sort of authentication on the web site, it is just a simple script to open a connection to a database to make sure it works. I have Anonymous Authentication enabled and set to use the Application pool identity. How do I make this work? Why is the ApplicationPoolIdentity trying to use ANONYMOUS LOGON? Better yet, how do I make it stop using the Anonymous logon?

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  • How much traffic is high-traffic [closed]

    - by Jack
    My primary interest is in gathering information about the technology used behind public facing websites. Much of the information I read arbitrarily differentiates between high-traffic vs the unstated non-high-traffic websites. This troubles me because I don't have a good grasp of how much traffic is high-traffic. Can anyone help me with this, is there a good rule of thumb? Please don't tell me it depends ;)

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  • How does an OS communicate with other hardware components?

    - by Jack
    How can a program running on a CPU (mostly OS) access other PC hardware? Such as Graphic card, HDD and so? From what I read, in DOS, this was done using BIOS calls, specifically the INT instruction. But, the INT instruction should only jump to the certain space in RAM. So how can some program stored in RAM access other computer hardware, when the CPU can only access RAM, and receive interrupts? Does Windows use INT instructions as well, or is there a new way to communicate with the hardware?

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  • Need to use wusa to stop endless rebooting on R2

    - by Jack
    I installed 3 updates, which after rebooting resulted in a reboot loop, never going past the "configuring your computer for windows" stage. Last known good configuration, safe mode etc make no difference (as expected). I have no system restore images available. I used dism to uninstall one of the updates, but the other two appear to be MSP patches, and so I cannot use dism to uninstall them. From what I have been reading it appears I must use wusa, however wusa does not seem to be included in WinRE. Does anyone have a suggestion of how I can access wusa to uninstall these updates, and hopefully reverse this problem?

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  • How to edit Registry from another OS Boot up

    - by jack
    Hi I accidentally changed one parameter in Windows and it was crashed and restarted everytime I logon. I can't go with safe mode. Restoring to Known Good Configurations doesn't work too. Unfortunately I don't have system backup. Are there any ways to recover or edit the registry file from another OS or bootable Windows PE? Which tools can I use to edit? Many thanks!

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  • Windows install missing NTLDR

    - by Jack
    Hi all. I'm having trouble install WinXP Pro on my pc because NTLDR is missing or can't find during installation process. I highly doubt it's my DVD drive because this machine work fine before the install process. The DVD rom work. Is there a work around for this problem? edit: this is the problem that i'm having. I'm trying to reformat the hard disk with killdisk.

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  • Forcing Acrobat Reader font

    - by Jack
    Hello, I have a netbook with Linpus Linux and I'm trying to open automatically generated documents with Acrobat Reader that use Verdana but without having it embedded inside the PDF file. Linpus doesn't come natively with any Verdana font so I had to install them inside /usr/share/fonts/by doing mkfontdirand fc-cacheto force a recache of the fonts. Then I've been able to select it inside other programs (eg. OpenOffice) but I'm still unable to open these PDFs. It seems that Acrobat is unable to find the font anyway. Since I have no control on how these PDFs are generated, is there a way to force Acrobat to use a specific font is the one it needs is unfound? Or maybe Acrobat needs a different kind of font configuration on Linux? Thanks in advance

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  • Per bytes RAM memory acess

    - by b-gen-jack-o-neill
    Hi, I have just a simple question. Today memory DDR chips are 64 bits wide, and the CPU data bus is also 64 bits wide. But memory is stil organised in single bytes. So, what I want to ask is, when CPU selects some memory adress, it should be one byte, right? Becouse the lowest memory portion you can access is 1 byte. But, if you get 1 byte per 1 adress, why is memory bus 8 bytes wide?

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