another update. For testing I disabled my on-board graphics. so when system is booting up, it is not having any /dev/fb0 . I am now connecting to it through ssh and loading the module. after module is inserted the board is initialized and I got my /dev/fb0, I have also attached the dmesg. But the monitor is still blank. :( any hints please ... thanks sudip On Fri, Dec 12, 2014 at 4:13 PM, Sudip Mukherjee <sudipm.mukherjee@xxxxxxxxx> wrote: > an update .. I am getting the debug messages from ioctl ... by mistake > I placed the debugging messages in FBIOGET_CON2FBMAP. > so if ioctl is executing, on pressing alt+ctrl+F2 the console should > display on the second monitor (if i am wrong), but nothing is showing > on that. > > sudip > > > On Fri, Dec 12, 2014 at 1:38 PM, Sudip Mukherjee > <sudipm.mukherjee@xxxxxxxxx> wrote: >> Hi, >> I have started with a pci based vga card. after booting i can see the >> card in lspci , and after loading the driver as a module i can see >> that the driver is linked with the device using lspci -k. >> >> for initial testing, i am using the ioctl command FBIOPUT_CON2FBMAP , >> which is supposed to map a console to a particular framebuffer. But on >> switching to that console I am not getting anything in the monitor. To >> test if ioctl is getting executed, i inserted some debugging messages >> as pr_err() in that particular case of the ioctl function in >> drivers/video/fbdev/core/fbmem.c , but after calling the ioctl again i >> am not getting those debug messages in dmesg. >> Now i am in doubt about what is happening.. if ioctl is executed then >> my debug messages should have been printed. >> >> Can anyone please give me some hints about how to test this new vga >> card... and also why the debug messages from ioctl is not getting >> printed .. >> >> i think its almost a similar thing as https://lkml.org/lkml/2009/12/2/288 >> >> >> thanks >> sudip _______________________________________________ Kernelnewbies mailing list Kernelnewbies@xxxxxxxxxxxxxxxxx http://lists.kernelnewbies.org/mailman/listinfo/kernelnewbies
