Hi Gordan, If you want to retain the output on serial console, please add kernel command "console=ttyS0,115200" at the grub config. If you want to see the kernel boot at both serial and vga, add "console=tty0" (for vga) along side with "console=ttyS0,115200". The output from VGA will come after kernel configure the video card. nomodeset does not help to retain serial output, it just means that you want to use X drivers, instead of kernel modesetting. Best regards, Chuong. On Fri, Mar 18, 2016 at 1:46 AM, Gordan Bobic <gordan at redsleeve.org> wrote: > When the kernel boots and the fb driver initializes and the > initramfs starts, the output disappers from the serial console. > This seems to correspond to the display output switching to a > different mode. It is present during u-boot, Tianocore and grub, > however. Is there a way to tell the kernel to not change the mode > so that full control via the serial line can be retained? I tried > "nomodeset" which I think should do this by disabling modesetting, > but it has been ineffective. Is there a way to achieve this? > _______________________________________________ > Arm-dev mailing list > Arm-dev at centos.org > https://lists.centos.org/mailman/listinfo/arm-dev > -- Chuong Tran Applied Micro - SW Engineer II Phone: 84-932176910 -------------- next part -------------- An HTML attachment was scrubbed... URL: <http://lists.centos.org/pipermail/arm-dev/attachments/20160318/d985b51d/attachment-0006.html>