问题

Windows Server 2016 (AHV-VM)的显示分辨率为1280x1024

D
Userlevel 1
徽章 ＋２
  • Didi7
  • 开拓者
  • 18日回复

好的，昨天我们的一个Nutanix集群升级到5.15 LTS，我开始使用uefi配置创建一个新的Windows Server 2016模板。

现在我的显示器分辨率是1280x1024，改变是不可能的，因为它是灰色的。已安装5.15 LTS和VirtIO 1.1.5版本的Nutanix Guest Tools。

这个错误是已知的，是否存在一个解决方案?

5.16 STS怎么样?是固定的吗?

谢谢您的回复。

问候,

Didi7

Ok, yesterday one of our many Nutanix clusters was upgraded to 5.15 LTS and I started to create a new Windows Server 2016 template using UEFI-configuration.<\/p>

\u00a0<\/p>

Now I am stuck at display resolution of 1280x1024 and change is not possible, because it is grayed out. Nutanix Guest Tools from 5.15 LTS and VirtIO 1.1.5 are installed.<\/p>

\u00a0<\/p>

Is this bug known and does there exist a work-around?<\/p>

\u00a0<\/p>

What about 5.16 STS? Is it fixed there?<\/p>

\u00a0<\/p>

Thanks for any reply.<\/p>

\u00a0<\/p>

Regards,<\/p>

Didi7<\/p>

\u00a0<\/p>","quoteUsername":"Didi7","translations":{"Common":{"like":"Like","unlike":"Unlike"},"Forum":{"Quote":"Quote","Share":"Share"}}}">

12个回复

Alona
排名
Userlevel 6
徽章 ＋5

嗨Didi7,

为了确保我们在同一页上，这个选项是灰色的吗?

Hi Didi7,<\/p>

\u00a0<\/p>

To make sure we\u2019re on the same page is this where the option is greyed out?<\/p>

\"//www.jhbzcj.com/next/server-virtualization-27/\"<\/figure>

\u00a0<\/p>","quoteUsername":"Alona","translations":{"Common":{"like":"Like","unlike":"Unlike"},"Forum":{"Quote":"Quote","Share":"Share"}}}">

D
Userlevel 1
徽章 ＋２

Hello Alona, no it is not within the UEFI configuration, you are stuck at the display resolution 1280x1024 within Windows OS。

Hello Alona, no it is not within the UEFI configuration, you are stuck at display resolution 1280x1024 within Windows OS.<\/p>

\u00a0<\/p>","quoteUsername":"Didi7","translations":{"Common":{"like":"Like","unlike":"Unlike"},"Forum":{"Quote":"Quote","Share":"Share"}}}">

D
Userlevel 1
徽章 ＋２

在uefi配置中改变分辨率是可能的，但在安装过程中没有影响。整个安装过程的Windows VM只能完成1280 x1024,所以你被迫用大监控成功安装的Windows Server 2016和你在安装过程中不能改变分辨率,你还停留在1280 x1024,当Windows完全安装和Nutanix客人工具,以及VirtIO驱动程序。

真的，这对顾客来说很烦人，也很不合理。

可能可以用Nutanix显示驱动程序修复，不知道吗?

在安装Windows Server 2016期间使用非uefi虚拟机会导致相同的Monitor和显示驱动程序，但您可以更改分辨率。

是否有一个解决方案，从Nutanix可用或这是一个已知的bug?

是否存在解决办法?

Changing resolution within UEFI-configuration is possible but has no effect during installation. The whole installation process of a Windows VM can only be done with 1280x1024, so you are forced to use big monitors to succeed with the installation of Windows Server 2016 and as you cannot change the resolution during installation, you are also stuck at 1280x1024, when Windows is fully installed and Nutanix Guest Tools, as well as VirtIO drivers are installed.<\/p>

\u00a0<\/p>

Really, that\u2019s so annoying and really not resonable to customers.<\/p>

\u00a0<\/p>

Might be fixable with an Nutanix display driver, don\u2019t know?<\/p>

\u00a0<\/p>

Using non-UEFI VMs during installatation of Windows Server 2016 results in the same Monitor and display driver, but you can change resolutions.<\/p>

\u00a0<\/p>

Is there a solution from Nutanix available or is this a known bug?<\/p>

\u00a0<\/p>

Does there exist a work-around?<\/p>","quoteUsername":"Didi7","translations":{"Common":{"like":"Like","unlike":"Unlike"},"Forum":{"Quote":"Quote","Share":"Share"}}}">

Alona
排名
Userlevel 6
徽章 ＋5

可以说您遇到的问题是在使用Prism中的“启动控制台”功能连接到VM时发生的吗?当使用“启动控制台”屏幕分辨率从UEFI设置和Windows驱动程序没有能力改变设置。因此，您需要更改UEFI中的分辨率设置，以影响VNC连接的分辨率。

问题是，VNC的目的是为了故障排除、调试等，而不是作为一个所有时间的访问工具。

当您通过RDP发布安装时，会出现这个问题吗?RDP使用了不同的驱动程序，因此您应该能够根据需要调整屏幕。

您是否考虑过从映像部署vm ?通过这种方式，您可以完全跳过安装阶段，直接进行初始设置。我建议在创建映像之前先对操作系统进行sysprep。sysprep的默认分辨率为1024 x 768——这一点需要记住。

下面是一个KB，专门描述您遇到的问题KB-4792 AHV | Windows虚拟机在UEFI模式下修改显示分辨率。

Would it be correct to say that the issue you are experiencing is when connecting to the VM by using \u201cLaunch console\u201d feature in Prism? When using \u201cLaunch console\u201d screen resolution is picked up from UEFI settings and Windows driver does not have the ability to change that setting. Therefore, you would need to change the resolution settings in UEFI in order to affect VNC connection resolution.<\/p>

The thing is, VNC is intended for troubleshooting, debugging and such rather then as a all time access tool.<\/p>

Does the issue appear when you connect via RDP post the installation? RDP is using a different driver hence you should be able to adjust the screen as required.<\/p>

Have you considered deploying VMs from an image? This way you can skip the installation phase entirely and arrive at initial set up. I would recommend to sysprep the OS prior to making an image out of it. AFAIK, sysprep defaults the resolution to 1024 x 768 \u2013 something to keep in mind.<\/p>

Here is a KB describing the issue that you encountered specifically KB-4792 AHV | How to change display resolution on Windows VMs running in UEFI mode.<\/a><\/p>","quoteUsername":"Alona","translations":{"Common":{"like":"Like","unlike":"Unlike"},"Forum":{"Quote":"Quote","Share":"Share"}}}">

D
Userlevel 1
徽章 ＋２

引文:您所遇到的问题是在使用Prism中的“启动控制台”功能连接到VM时发生的，这样说是否正确?

当然可以，但只要没有网络连接，就必须使用VNC控制台，直到一切都设置好，我说的是虚拟机模板生成，这里没有可用的网络连接，因为它们一直处于断开状态。更新，如Windows Server 2016的累积更新是通过ISO媒体完成的。在对这些vm模板进行sysprep和克隆之后，它们将连接到网络，然后当然要使用RDP。

我真的了解很多Hypervisor平台，并有15年的VMware和类似的经验，但从来没有任何问题改变显示分辨率通过控制台，即使它只有640x480和改变到800x600是唯一可能的，但我被迫改变显示分辨率在uefi固件和显示分辨率变化在Windows中不再可能，是唯一的Nutanix AHV虚拟机imho!

当然，如果您使用RDP，客户机将定义分辨率，这不是我最初遇到的问题。

是的，在生成这些模板(不需要任何网络连接)并完全配置为进一步分发之后，这些虚拟机将使用sysprep和通用性关闭!

我决定继续创建非uefi固件Windows虚拟机模板，因为这个显示分辨率问题很烦人。不幸的是我被迫转移一些hyper - v代2 vm Nutanix AHV,我将试着设置默认分辨率UEFI-firmware 1024 x768,但是这个没有影响的Windows安装程序显示分辨率,但我不确定,我会再试一试。

问候,

Didi7

Quote: Would it be correct to say that the issue you are experiencing is when connecting to the VM by using \u201cLaunch console\u201d feature in Prism?<\/p>

\u00a0<\/p>

Yes absolutely, but as long as there is no network connection, one is forced to use the VNC Console until everything is setup and I am talking about VM-template generation, where there are no network connections availaible, as here they stay disconnected. Updates, like Cumulative Updates in Windows Server 2016 are done via ISO medias. After syspreping and cloning those VM-templates, they get connected to networks and then RDP is used of course.<\/p>

\u00a0<\/p>

I really know a lot of Hypervisor platforms and have 15 years of experience with VMware and the likes, but never had any problems to change the display resolution via the console, even if it\u2019s only 640x480 and a change to 800x600 is only possible, but that I am forced to change the display resolution in the UEFI-firmware and that display resolution change within Windows is no longer possible, is unique to Nutanix AHV VMs imho!<\/p>

\u00a0<\/p>

Of course, if you use RDP, the client defines the resolution, that\u2019s not the question I originally had.<\/p>

\u00a0<\/p>

And yes, after those templates are generated (without any network connection) and completely configured for further distribution, those VMs are shutdown with sysprep and generalized!<\/p>

\u00a0<\/p>

I decided to continue to create non UEFI-firmware Windows VM-templates at the moment, because this display resolution problem is annoying. Unfortunately I am forced to transfer some Hyper-V Generation 2 VMs to Nutanix AHV and there I will try to set the default resolution to 1024x768 in UEFI-firmware, but iirc this had no effect to how the Windows setup display resolution came up, but as I am unsure, I will give it another try.<\/p>

\u00a0<\/p>

Regards,<\/p>

Didi7<\/p>

\u00a0<\/p>","quoteUsername":"Didi7","translations":{"Common":{"like":"Like","unlike":"Unlike"},"Forum":{"Quote":"Quote","Share":"Share"}}}">

D
Userlevel 1
徽章 ＋２

好的，我继续我的测试基于ufi固件的Windows 2016虚拟机，最后发现，在Windows 2016虚拟机显示分辨率只有改变，当改变默认的ufi固件分辨率，只有当你进入ufi固件配置后重启和退出。显示分辨率改变为您在uefi固件中选择的分辨率。

再次关闭Windows Server 2016虚拟机后，显示分辨率再次恢复到1280x1024，在Windows操作系统内无法更改。如果重启Windows 2016虚拟机(而不是下电)，输入“F2”格式的UEFI-firmware后再次退出，屏幕分辨率将再次变为Nutanix UEFI-firmware设置中的分辨率。

这就是我所说的烦人，应该尽快从Nutanix中换掉，但也许我是唯一一个声称它烦人的人，至少在我们公司有几个用户觉得它烦人。

欢迎任何来自Nutanix的评论!

问候,

Didi7

Ok, I continued my tests on UEFI-firmware based Windows 2016 VMs and finally found out, that display resolution in Windows 2016 VMs only changes, when changing the default resolution in UEFI-firmware and only if you enter UEFI-firmware configuration after a reboot and exit. The display resolution changes to the one you choose in UEFI-firmware.<\/p>

\u00a0<\/p>

As soon as you power off the Windows Server 2016 VM again, the display resolution returns to 1280x1024 again and cannot be changed within Windows. If you reboot (not power off) the Windows 2016 VM, enter UEFI-firmware with F2 and exit again, the display resolution changes again to the one you chose in Nutanix UEFI-firmware settings.<\/p>

\u00a0<\/p>

That\u2019s what I call annoying and should be changed from Nutanix asap, but maybe I am the only one claiming it\u2019s annoying, at least in our company several users find it annoying.<\/p>

\u00a0<\/p>

Any comments from Nutanix are welcome!<\/p>

\u00a0<\/p>

Regards,<\/p>

Didi7<\/p>

\u00a0<\/p>","quoteUsername":"Didi7","translations":{"Common":{"like":"Like","unlike":"Unlike"},"Forum":{"Quote":"Quote","Share":"Share"}}}">

Sudhir9
Userlevel 2
徽章 ＋４

@Didi7

我理解你的担心，并且已经在我的实验室用AHV20170830.395在AOS 5.15上进行了同样的测试。这确实是一个必要的特性，在Hyper-V和VMWare中工作得很好。正如您已经提到的，它特定于UEFI和遗留虚拟机不显示行为。这是因为，为了改变显示分辨率，基于VGA标准的传统显卡通过VGA BIOS公开了它们的辅助程序。操作系统驱动程序将引发BIOS来中断INT 10H，以调用各自的VGA BIOS程序，这将依次调用固件helper来驱动特定分辨率的卡。
在UEFI，没有VGA。所有符合uefi的卡片都提供GOP协议处理程序来驱动卡片来相应地改变显示分辨率。
要完全实现动态分辨率更改功能，OS驱动程序必须能够在运行时(使用VGA或GOP)调用平台固件(BIOS或UEFI)。请注意，在没有分辨率更改功能的情况下，客户OS将不得不继承固件在启动时设置显示设备时最初为其设置的任何分辨率(以及framebuffer大小)。

由于上面提到的原因，您只能从UEFI固件菜单中更改Windows虚拟机的默认引导分辨率https://portal.nutanix.com/page/documents/details/?targetId=AHV-Admin-Guide-v5_17%3Avmm-getting-familiar-with-uefi-firmware-c.html

我们对此有一个增强请求，我正在与工程检查更多的更新。我会在这个帖子上与你保持联系。

Sudhir
@Didi7<\/user-mention>\u00a0\u00a0<\/p>

I understand your concern and have tested the same in my lab on\u00a0AOS 5.15 with AHV20170830.395. This indeed is a necessary feature and works well in Hyper-V and VMWare. As you have mentioned its specific to UEFI and LEGACY VMs doesn't show the behaviour.\u00a0\u00a0It's because, to change the display resolution, legacy Graphics cards based on VGA standard exposed their helper routines via VGA BIOS. OS drivers would raise a BIOS to interrupt\u00a0INT 10H\u00a0for the respective VGA bios routine to be invoked, which would in turn call into the firmware helper for driving the card in a particular resolution.
With UEFI, there is no VGA. All UEFI-compliant cards provide GOP protocol handlers to drive the card accordingly for changing display resolution.
To fully implement dynamic resolution changing capabilities, the OS driver must be able to call into platform firmware (BIOS or UEFI) at runtime (using VGA or GOP). Note that in the absence of resolution change capability, the guest OS will have to inherit whatever resolution (and hence framebuffer size) the firmware had initially set for it while setting up the display device at boot.<\/p>

Due to the reason mentioned above, you can only\u00a0change the default boot resolution of your Windows VM from the UEFI firmware menu as described here\u00a0https:\/\/portal.nutanix.com\/page\/documents\/details\/?targetId=AHV-Admin-Guide-v5_17%3Avmm-getting-familiar-with-uefi-firmware-c.html<\/a>

We have an enhancement request in place for this and I am checking with engineering for more updates on that. I will keep you posted on this thread.<\/p>","quoteUsername":"Sudhir9","translations":{"Common":{"like":"Like","unlike":"Unlike"},"Forum":{"Quote":"Quote","Share":"Share"}}}">

D
Userlevel 1
徽章 ＋２

嗨Sudhir,

有趣!嗯，其他hypervisor，比如Hyper-V和VMware，在Windows Server 2016下没有uefi - vm的显示分辨率变化问题。

让我们看看Nutanix如何解决这个问题!

问候,

Didi7

Hi Sudhir,<\/p>

\u00a0<\/p>

interesting! Well, other Hypervisors like Hyper-V and VMware have no display resolution change problems with UEFI-VMs under Windows Server 2016.<\/p>

\u00a0<\/p>

Lets see how Nutanix can fix that!<\/p>

\u00a0<\/p>

Regards,<\/p>

Didi7<\/p>","quoteUsername":"Didi7","translations":{"Common":{"like":"Like","unlike":"Unlike"},"Forum":{"Quote":"Quote","Share":"Share"}}}">

F

您能提供关于此增强的更新吗?

is there an update you can provide on this enhancement?<\/p>","quoteUsername":"Freddie","translations":{"Common":{"like":"Like","unlike":"Unlike"},"Forum":{"Quote":"Quote","Share":"Share"}}}">
D
Userlevel 1
徽章 ＋２

据我所知没有:(

Not that I know of :(<\/p>","quoteUsername":"Didi7","translations":{"Common":{"like":"Like","unlike":"Unlike"},"Forum":{"Quote":"Quote","Share":"Share"}}}">
F

据我所知没有:(

太酷了!谢谢你告诉他们这件事。我以前也找过，但没有找到任何结果;我猜这次我输入了正确的搜索词。我去更新了决议，现在，它是有效的。

\t

Not that I know of :(<\/p>\t<\/div><\/content-quote>

Cool!\u00a0 Thanks for bringing this to their attention.\u00a0 I had searched before with no real results; I guess this time I entered in the correct search words.\u00a0 I went in and updated the resolution, for now, it works.<\/p>","quoteUsername":"Freddie","translations":{"Common":{"like":"Like","unlike":"Unlike"},"Forum":{"Quote":"Quote","Share":"Share"}}}">

D
Userlevel 1
徽章 ＋２

你可以在UEFI-BIOS中改变分辨率，但是当你关闭VM时，原来的1280x1024的分辨率又回来了。

好运！

Well, you can change the resolution in the UEFI-BIOS but as soon as you power off the VM the old resolution of 1280x1024 is back.<\/p>

Good luck!<\/p>","quoteUsername":"Didi7","translations":{"Common":{"like":"Like","unlike":"Unlike"},"Forum":{"Quote":"Quote","Share":"Share"}}}">

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