華碩 chromebook 上不再載入 startxfce4

我有一個 Acer chromebook，我曾經能夠通過“shell”然後在 chrome 終端上的“sudo startxfce4”載入到 xfce。突然它失敗了，將不再載入。相反，我得到以下資訊。有什麼建議嗎？

chronos@localhost / $ sudo startxfce4
Entering /mnt/stateful_partition/crouton/chroots/xenial...
/usr/bin/startxfce4: Starting X server


X.Org X Server 1.18.4
Release Date: 2016-07-19
X Protocol Version 11, Revision 0
Build Operating System: Linux 4.4.0-45-generic x86_64 Ubuntu
Current Operating System: Linux localhost 3.8.11 #1 SMP Tue Oct 31 22:10:06 PDT 2017 x86_64
Kernel command line: cros_secure console= loglevel=7 init=/sbin/init cros_secure oops=panic panic=-1 root=/dev/dm-0 rootwait ro dm_verity.error_behavior=3 dm_verity.max_bios=-1 dm_verity.dev_wait=1 dm="1 vroot none ro 1,0 2539520 verity payload=PARTUUID=9feb1eec-d299-fe40-a13d-abe1410a06ae/PARTNROFF=1 hashtree=PARTUUID=9feb1eec-d299-fe40-a13d-abe1410a06ae/PARTNROFF=1 hashstart=2539520 alg=sha1 root_hexdigest=5b28e9104a0c6de57e5586e8881f487b517ac745 salt=9f9e91fe33efaf85f73ed8a2d521f9278d4e2f04c2b3165ff3f9de38cc059669" noinitrd vt.global_cursor_default=0 kern_guid=9feb1eec-d299-fe40-a13d-abe1410a06ae add_efi_memmap boot=local noresume noswap i915.modeset=1 tpm_tis.force=1 tpm_tis.interrupts=0 nmi_watchdog=panic,lapic iTCO_vendor_support.vendorsupport=3  
Build Date: 02 November 2016  10:06:10PM
xorg-server 2:1.18.4-0ubuntu0.2 (For technical support please see http://www.ubuntu.com/support) 
Current version of pixman: 0.33.6
       Before reporting problems, check http://wiki.x.org
       to make sure that you have the latest version.
Markers: (--) probed, (**) from config file, (==) default setting,
       (++) from command line, (!!) notice, (II) informational,
       (WW) warning, (EE) error, (NI) not implemented, (??) unknown.
(++) Log file: "/tmp/Xorg.crouton.1.log", Time: Mon Dec 18 20:05:53 2017
(==) Using system config directory "/usr/share/X11/xorg.conf.d"
Error org.freedesktop.DBus.Error.UnknownMethod: Method "ReleaseDisplayOwnership" with signature "" on interface "org.chromium.LibCrosServiceInterface" doesn't exist

xf86EnableIOPorts: failed to set IOPL for I/O (Operation not permitted)
Error org.freedesktop.DBus.Error.UnknownMethod: Method "ReleaseDisplayOwnership" with signature "" on interface "org.chromium.LibCrosServiceInterface" doesn't exist

xf86EnableIOPorts: failed to set IOPL for I/O (Operation not permitted)
(EE) 
Fatal server error:
(EE) AddScreen/ScreenInit failed for driver 0
(EE) 
(EE) 
Please consult the The X.Org Foundation support 
        at http://wiki.x.org
for help. 
(EE) Please also check the log file at "/tmp/Xorg.crouton.1.log" for additional information.
(EE) 
Error org.freedesktop.DBus.Error.UnknownMethod: Method "TakeDisplayOwnership" with signature "" on interface "org.chromium.LibCrosServiceInterface" doesn't exist

(EE) Server terminated with error (1). Closing log file.

編輯1：

這是上面提到的日誌文件，@LiveWireBT：https ://people.ucsc.edu/~ianc/files/Xorg.crouton.1.log 錯誤行似乎是：

$$ 21.721 $$(EE) modeset(0)：drmSetMaster 失敗：權限被拒絕

有任何想法嗎？

描述此問題的許多站點都沒有提供對我有用的解決方案。最後，我按照 https://lifehacker.com/how-to-install-linux-on-a-chromebook-and-unlock-its-ful-509039343上的說明 直接更新了 XFCE：

sudo sh -e ~/Downloads/crouton -t xfce -u

這花了大約 15 分鐘，然後：我回來了，開始執行。

引用自：https://unix.stackexchange.com/questions/411704