On 7/09/14 11:59 PM, Douglas Ray wrote: > Hi Wen Lin, > did you try "vbeinfo" at the GRUB prompt?
... there's also http://lists.gnu.org/mailman/listinfo/help-grub > cheers > Douglas > > On 6/09/14 5:14 PM, Wen Lin wrote: >> Hi, >> >> I've been trying for weeks to install Ubuntu 14.04 onto my friend's new >> Toshiba laptop with the new UEFI secure boot built-in. So far, no luck! >> I can't even boot it up with the Ubuntu Live CD, regardless of >> SecureBoot enabled or disabled. >> >> First, some info and what I had done so far: >> >> Laptop: Toshiba Satellite C50D-A >> (My friend bought from JB Hifi for $480 - not a high-end machine) >> CPU: AMD E1-1200 APU with Radeon HD Graphic 1.4 GHz 64-bit >> Memory: 4 GB >> HD: 500 GB >> Display adapter: AMD Radeon HD 7310 Graphic >> OS: Windows 8 (I had since upgraded it to Win 8.1) >> >> I had: >> - Created a Win System Recovery image (using Win 8.1 built-in standard >> tool) to a USB flash disk. >> - Also used Win 8.1 built-in tool to shrink the C: drive to 255 GB, >> leaving me the other half of the disk for my Ubuntu install. >> >> I had no problem F2 at startup into the laptop's BIOS to change stuff like: >> - Boot sequence >> - Enable/Disable SecureBoot >> - Swap between UEFI Boot & CSM Boot (or Legacy mode) >> >> I had googled around quite a lot, and had tried several different >> approaches suggested, to no avail. >> >> Most of the forum sites/blogs suggest disable SecureBoot, some said no >> need - as newer Distro like Ubuntu 14.04 nowadays have no problem >> booting with SecureBoot on. >> >> I tried both approaches, but the Live CD first could only display a >> text-based version of GRUB 2 boot menu, with "Try Ubuntu" & "Install >> Ubuntu" among the menu options (rather than the Ubuntu's usual graphical >> one). Then when I selected either the "Try" or "Install" options, it >> went into a total blank screen, and a moment later, everything stop - I >> tried waiting for it, sometimes hours, but it never come back! >> >> To try to see some messages, I used 'e' in the Grub menu to get into an >> editing mode: >> set gfxpayload=keep >> linux /casper/vmlinuz.efi file=/... boot=casper quiet splash -- >> initrd /casper/initrd.lz >> >> To edit the kernel boot up parameters - generally involved replacing the >> "quiet splash" with parameters like "nomodeset", "vga=radeon", >> "vga=792", etc - all to no avail. But this time I could see some boot >> up messages splashing out, and then stopped at certain point: >> E.g. >> - [drm] Initialized radeon 1.34.0 ... >> - ahci 0000:00:11:0: flags: 64bit ncq ... >> - r8169 Gigabit Ethernet driver ... >> - fb: conflicting fb hw usage radeondrmfb vs EFI VGA - removing generic >> driver >> - ACPI: Video Device [VGA] (multi-head: yes rom: no post: no) >> >> In general, it would seem the different boot parameters could only vary >> in at most several boot steps, but none of them managed to go all the >> way to successfully boot into Ubuntu Live. >> >> I had also tried other Distros: Ubuntu 13.10 64-bit & Linux Mint 15 >> Cinnamon 64-bit - no different. I even tried an Ubuntu 12.04 32-bit CD >> - but it boot straight into the Windows 8.1 instead. >> >> Another thing to point out: I had also tried the CSM Boot option (in >> place of the default UEFI). When in this mode, the whole "SecureBoot" >> feature disappeared, and I managed to boot into Ubuntu 14.04 Live CD, >> all the local programs, WiFi, Internet, the lots, all worked as normal! >> I had not tried installing Ubuntu from there. Just as well! As >> attempt to boot back to Win 8.1 failed - the error message basically was >> saying that the Win 8.1 is not there anymore! I could only boot back to >> Win 8.1 normally after I had reverted back to UEFI Boot mode. >> >> As you can see, no joy at all! :-( >> >> So my question: Is it a UEFI/SecureBoot problem, or an AMD Radeon >> display adapter problem? If it's a display adapter problem, then why I >> could boot into Ubuntu when not in UEFI mode? If it's a UEFI problem, >> then why couldn't I boot into Ubuntu with the SecureBoot disabled (said >> so by all the related forums & blogs I had visited so far - i.e. >> secureboot off - no problem)? >> >> I was pondering, if all else failed, to just install Ubuntu 14.04 into >> the partition I had freed up, while in CSM mode. If this worked, then I >> could persuade my friend to just stick to Ubuntu, and occasionally if >> wanting to go to Wn 8.1, change back to UEFI before doing so. While >> this may work (painfully), my friend might one day decide not to go back >> to Ubuntu, and my efforts would be wasted. Worst still, installing >> Ubuntu in CSM mode may render the Win 8.1 unbootable, and I don't think >> my friend want that! >> >> Any suggestions, comments, or experience in such dual boot adventure >> would be welcomed! >> >> Thanks in advance. >> >> Wen >> >> >> >> _______________________________________________ >> luv-main mailing list >> [email protected] >> http://lists.luv.asn.au/listinfo/luv-main >> > _______________________________________________ > luv-main mailing list > [email protected] > http://lists.luv.asn.au/listinfo/luv-main > > _______________________________________________ luv-main mailing list [email protected] http://lists.luv.asn.au/listinfo/luv-main
