9 More Discussions You Might Find Interesting
1. Shell Programming and Scripting
Is there a way, on the command line, to show a black screen WITHOUT turning off the monitor? Also, is there a way to make the computer show the last screen before the black screen as soon as the user interacts with it?
I know that there are various ways to turn off the computer, or... (8 Replies)
Discussion started by: Zel2008
please can you help me crack this....
i have an hp-ux server which when after booting it does not completely boot to graphical. it stops aa black screen with only an hour glass showing.
at this stage only the mouse responds but the keyboard does not respond.
any idea to find... (5 Replies)
Discussion started by: steveGH
Im new user for linux fedora 20.... i really need help ....... i have no idea why suddently when i turn on my laptop fedora turn to be black screen and ask me loging in , when i loging then nothing happen , it stay at the same screen... then i try to go to "with linux secure...,"... (12 Replies)
Discussion started by: asianfootball
4. UNIX Desktop Questions & Answers
I hope this is the correct forum, please forgive a newbie. Hi all, New to linux, ubuntu, and this forum. I have enjoyed ubuntu for the past few months, but after my last update installation ubuntu would boot to a black screen and blinking cursor. If I let it sit for a while it would give the... (0 Replies)
Discussion started by: nutoubuntu
5. UNIX for Dummies Questions & Answers
HP G4p DL360 SCSI version (*see below of pdf of server basics if needed)
Scientific Linux live-cd.iso
When it boots off the LiveCD, all starts swell, but if I install the OS normal it goes to a black monitor....
If I install text only, it works and when done I am at the... (4 Replies)
Discussion started by: sas
6. Red Hat
I am using Intel HD 400 Graphics on a laptop.
When I logout, I get a black screen with no cursor or anything. I have to hard reboot the system to get into linux again.
Working on RHEL 6 (gnome) (1 Reply)
Discussion started by: sunveer
Can you pls. provide me detailed procedure on how to update system BIOS and ILOM Firmware for x4100 M2 servers.
Thanks. :) (1 Reply)
Discussion started by: chozie
8. Shell Programming and Scripting
I was thinking if there is a way that i can go about making my screen go black automatically for about 10seconds, (with a message like "take a break" printed on the screen) and after 10seconds everything comes back to normal....
is there any way that i can do this...???
to further clarify the... (2 Replies)
Discussion started by: c_d
I am new in here.
I have to work on a system where nothing is showing up on the screen.
I am suspecting an hardware issue, can anyone help me with this?
Thanks for your input
BB (4 Replies)
Discussion started by: labcc
BLK_MAKE_REQUEST(9) Block Devices BLK_MAKE_REQUEST(9)
blk_make_request - given a bio, allocate a corresponding struct request.
struct request * blk_make_request(struct request_queue * q, struct bio * bio, gfp_t gfp_mask);
target request queue
The bio describing the memory mappings that will be submitted for IO. It may be a chained-bio properly constructed by block/bio layer.
gfp flags to be used for memory allocation
blk_make_request is the parallel of generic_make_request for BLOCK_PC type commands. Where the struct request needs to be farther
initialized by the caller. It is passed a struct bio, which describes the memory info of the I/O transfer.
The caller of blk_make_request must make sure that bi_io_vec are set to describe the memory buffers. That bio_data_dir will return the
needed direction of the request. (And all bio's in the passed bio-chain are properly set accordingly)
If called under none-sleepable conditions, mapped bio buffers must not need bouncing, by calling the appropriate masked or flagged
allocator, suitable for the target device. Otherwise the call to blk_queue_bounce will BUG.
When allocating/cloning a bio-chain, careful consideration should be given to how you allocate bios. In particular, you cannot use
__GFP_WAIT for anything but the first bio in the chain. Otherwise you risk waiting for IO completion of a bio that hasn't been submitted
yet, thus resulting in a deadlock. Alternatively bios should be allocated using bio_kmalloc instead of bio_alloc, as that avoids the
mempool deadlock. If possible a big IO should be split into smaller parts when allocation fails. Partial allocation should not be an error,
or you risk a live-lock.
Kernel Hackers Manual 2.6. July 2010 BLK_MAKE_REQUEST(9)